Embed Size (px)
Citation preview
SuperK Extend-UV
Instruction Manual
Tunable UV Source
P a g e | 1
Issue: 1.11
Published: November 21, 2014
Author: CBr
Copyright © 2014 by NKT Photonics A/S. All rights reserved. Reproduction or translations of any part of this work is prohibited.
P a g e | 2
Table of Contents
1 General .............................................................................................. 3 2 Laser Safety ........................................................................................ 4
2.1 Labels used on SuperK Extend-UV .................................................... 4 2.1.1 Label Positions .......................................................................... 6
2.2 Safety Features .............................................................................. 7 2.2.1 Interlock .................................................................................. 7 2.2.2 Shutters ................................................................................... 7
2.3 Laser Protective Eyewear ................................................................. 8 3 Interfaces ........................................................................................... 9
3.1 Top Cover ...................................................................................... 9 3.2 Optical Interface ........................................................................... 10 3.3 Electrical Interface ........................................................................ 11
3.3.1 Bus Input and Bus Through ...................................................... 11 3.3.2 LEDs ...................................................................................... 11 3.3.3 Address Selector ..................................................................... 12 3.3.4 Monitor Electrical Output (Optional) ........................................... 12
4 Installation ........................................................................................ 14 4.1 Electrical Connections .................................................................... 14 4.2 Optical Connections ....................................................................... 16
5 Control Software ................................................................................ 18 5.1 Software Description ..................................................................... 18 5.2 Software Installation ..................................................................... 18 5.3 Operation of the Extend-UV via the Custom GUI ............................... 24
6 Optical Alignment............................................................................... 26 6.1 Fiber Delivery System (FDS) .......................................................... 26
6.1.1 Attaching the FDS to the Extend-UV Accessory ........................... 26 6.1.2 Alignment of the FDS ............................................................... 27
7 Optical Output Parameters .................................................................. 31 7.1 Beam Coordinate Planes ................................................................ 31 7.2 Visible and IR Optical Output Parameters ......................................... 31
7.2.1 Visible and IR Beam Wavelength Coverage ................................. 31 7.2.2 Visible and IR Beam Polarization Properties ................................ 32 7.2.3 Visible and IR Beam Geometric Parameters ................................ 33
7.3 UV Optical Output Parameters ........................................................ 33 7.3.1 UV Beam Spectral Properties .................................................... 33 7.3.2 UV Beam Polarization Properties ................................................ 34 7.3.3 UV Beam Geometric Parameters ................................................ 35
8 Disconnecting .................................................................................... 38 9 Service & Support .............................................................................. 39
9.1 Cleaning ...................................................................................... 39 9.2 Support ....................................................................................... 40
10 Dimensions ..................................................................................... 41
P a g e | 3
1 General Introduction Please take the necessary time to read this manual. It contains
vital information for the proper operation of the SuperK Extend-
UV as it is used together with a SuperK Extreme laser system.
This manual covers the SuperK Extend-UV series, with product
numbers US00-000-004, A351-100-000 and A351-300-000.
Caution – Use of controls or adjustments or performance of
procedures other than those specified herein may result in
hazardous radiation exposure. The SuperK Extend-UV is intended
for use with the SuperK Extreme only, which comprises a Class 4
laser system. Using the SuperK Extend-UV with laser source
other than the SuperK Extreme may result in hazardous radiation
exposure. Only persons who are familiar with laser safety
regulations and instructed in the safe use of lasers are allowed to
operate these systems.
This product is not UL-approved but all safety components are
UL-approved.
Description The SuperK Extend-UV is a plug & play extension box for the
SuperK Extreme laser system range of products which adds a UV
output channel with an adjustable variable center wavelength to
the SuperK Extreme output spectrum. Secondary output
channels supply visible and near-infrared light emitted from
auxiliary output ports.
The UV output from the SuperK Extend-UV is a free space beam.
The enclosure may be combined with a SuperK Connect and
SuperK Fiber Delivery at the visible and IR ports to form a Fiber
Delivery System (FDS) for the visible and IR light exiting the
accessory. The Extend-UV is also compatible with other SuperK
accessories and may be used simultaneously with e.g. the SuperK
Varia.
P a g e | 4
2 Laser Safety
The SuperK Extend-UV is not a laser source on its own; however,
when connected to the SuperK Extreme laser system its output
constitutes a class 4 laser system following the classification of
the laser source. Please refer to section 2 of the SuperK Extreme
instruction manual for more information about the safety issues
associated with this type of laser source and take the necessary
safety precautions when operating this accessory.
Warning When the SuperK Extend-UV is connected to a SuperK Extreme
laser system, its output constitutes a class 4 laser and must
therefore be regarded as a potential hazard to the operator.
2.1 Labels used on SuperK Extend-UV
The following labels are found on the SuperK Extend-UV:
Visible and invisible laser classification label, figure 2-1.
Laser hazard label, figure 2-2. UV output aperture label, figure 2-3. Laser aperture label, figure 2-4.
Item label, figure 2-5.
Laser
Classification
Label
The visible and invisible classification label is a notification that
the visible and invisible laser radiation from the SuperK Extend-
UV together with the SuperK Extreme laser system constitutes a
Class 4 laser product and exposure to eye and skin must be
avoided from both direct and scattered radiation.
Figure 2-1: Visible and invisible classification label
Laser Hazard
Label The laser hazard label indicates that SuperK Extend-UV together
with the SuperK Extreme laser system is a laser source.
Figure 2-2: Laser hazard label
P a g e | 5
UV Output
Aperture Label The UV output aperture label indicates the location of the UV
output aperture on the SuperK Extend-UV accessory and supplies
safety information regarding expected maximum output beam
parameters in compliance with IEC 60825-1:2007 standards.
Figure 2-3: UV output aperture label
Laser Aperture
Label The Laser aperture label indicates the location of all additional
laser apertures.
Figure 2-4: Laser aperture label
Item Label The Item label provides information about:
The manufacturer of the system (NKT Photonics, Blokken
84, DK-3460 Birkerød)
The accessory name SuperK Extend-UV and the model
variant, e.g. DUV
The product number (P/N) for the accessory
The 8-digit serial number (S/N) for the accessory
The design version (Ver)
The month and year of system manufacture
CE marking
Figure 2-5: Item label
P a g e | 6
2.1.1 Label Positions
The labels discussed above are on the top cover plate and on the
side of the accessory. The laser classification, hazard, UV output
aperture and laser aperture labels are on the top cover of the
accessory and their positions are shown in figure 2-6. The item
label is on the side of the accessory and its position is shown in
figure 2-7.
Figure 2-6: Laser classification, hazard, UV output aperture and laser aperture
labels on the top cover of the SuperK Extend-UV.
Notice The laser apertures are not on the top of the accessory, but are
located on the sides of the accessory just underneath where the
labels are located.
Figure 2-7: Item label on the side of the SuperK Extend-UV.
Hazard label
Laser aperture
labels
Laser
classification label
UV output
aperture label
P a g e | 7
2.2 Safety Features
2.2.1 Interlock
The SuperK Extend-UV is equipped with an interlock, ensuring
that the SuperK Extreme system can only be operated when the
interlock cable is connected. See section 4.1 for details.
2.2.2 Shutters
Warning Caution – Use of controls or adjustments or performance of
procedures other than those specified herein may result in
hazardous radiation exposure.
As an additional safety feature, the three primary laser apertures
of the SuperK Extend-UV are equipped with a mechanical shutter
that enables complete blocking of the optical output. The shutter
function is activated by turning the shutter knob on the top plate
to the “Closed” position. See figure 2-8 below.
To minimize risk of accidents it is recommended closing the
shutters whenever the laser outputs are not used. This is
particularly recommended if one of the outputs is not used for a
longer period of time.
Figure 2-8: Shutter for the auxiliary (IR) port of the SuperK Extend-UV. The
shutter in this image is in the “Open” position.
P a g e | 8
2.3 Laser Protective Eyewear
The SuperK Extreme laser source covers the full visible spectrum
with a very high spectral power density; therefore, it is not
possible to achieve full protection from laser protective eyewear.
Accordingly, utmost care must be taken when operating a SuperK
Extreme laser source with an Extend-UV accessory. Only
authorized personnel with proper safety training should be
allowed to operate this accessory with a SuperK Extreme laser
system.
Significant protection can be achieved with the correct choice of
laser safety eyewear. We recommend using a combination of
filter technologies (absorbance and interference). The
combination of filters is not a perfect solution and users should
exercise extreme caution even when the recommended eyewear
is used.
Recommended
Eyewear Laser safety eyewear from NoIR Laser Company, LCC using IR5D
filters is currently the most suitable commercial off-the-shelf
product available for operation of a SuperK Extreme laser system
with the Extend-UV accessory. Eyewear using IR5D filter
technology provides significant blocking in both the near-infrared
and UV spectral ranges while providing at least a small amount of
blocking in the visible spectral range. Remember that full
protection is not achieved with this eyewear. The optical density
(OD) as a function of wavelength for an IRD5 filter is shown in
figure 2-9.
Figure 2-9: Optical density as a function of wavelength for IRD5 filters
Notice More information on eyewear using these filters can be found at:
http://www.noirlaser.com/filters/ird5.html
P a g e | 9
3 Interfaces Warning Caution – Use of controls or adjustments or performance of
procedures other than those specified herein may result in
hazardous radiation exposure.
3.1 Top Cover
The top cover of the SuperK Extend-UV contains important
information about laser apertures and shutters as well as
provides access to through-holes for mounting the SuperK
Extend-UV to an optical breadboard or similar.
Figure 3-1: Top-down view of the SuperK Extend-UV
A. Release: When a collimator is inserted into the collimator
input port, there is an automatic retaining mechanism
which is released by pressing down the release button.
B. Lock: In addition to the automatic retaining mechanism,
there is a screw in the hole marked with “Lock”. This must
be used to lock the collimator in place for stable operation.
See section 4.2.
C. UV output shutter
D. Auxiliary IR output shutter
E. Auxiliary visible output shutter
F. Mounting holes: These two holes can be used to mount the
SuperK Extend-UV to an optical breadboard. The two holes
enable mounting on both Metric and US standard optical
breadboards (25 mm or 1” pitch).
C
F
B
A
D
Electrical
Interface
E
P a g e | 10
3.2 Optical Interface
The main optical interface contains the optical input to the
SuperK Extend-UV, the primary UV output port and the auxiliary
visible and IR output ports. There is also an output monitor port
for an optional power monitor.
Figure 3-2: Main Optical Interface
A. Optical input: Input port for the SuperK Extreme laser
system output collimator.
B. Primary UV optical output port.
C. Auxiliary visible optical output port with 4 mounting holes
for e.g. fiber coupled output with SuperK CONNECT.
D. Auxiliary IR optical output port with 4 mounting holes for
e.g. fiber coupled output with SuperK CONNECT.
E. Optical output port for a power monitor (optional).
E
A
B
C
D
P a g e | 11
3.3 Electrical Interface
The electrical interface contains indicators and electrical
connections to e.g. the SuperK Extreme laser system.
Figure 3-3: Electrical Interface
A. Bus input port.
B. Bus through port.
C. Emission LED.
D. Interlock LED.
E. Power LED.
F. Accessory address selector.
G. Monitor electrical output (optional).
H. Optical input port with interlock switch for collimator input
from SuperK Extreme laser source.
3.3.1 Bus Input and Bus Through
The bus input and bus through ports comprise a digital bus
interface with the SuperK Extreme laser system. The bus input
port allows for communication with and supplies power to the
SuperK Extend-UV accessory. See section 4.1 for more
information on this electrical bus.
3.3.2 LEDs
The electrical interface has 3 LEDs which indicate the connectivity
state between the SuperK Extend-UV and the SuperK Extreme
laser system.
H
A
B C D
E
F
G
P a g e | 12
Emission The emission LED emits red light when the SuperK Extreme laser
system is emitting light. When this LED is active, laser light is
present at the primary and auxiliary optical output ports. The
emitted light may be blocked at each port with their respective
shutters; however, the shutter settings on the SuperK Extend-UV
do not have an influence on the emission LED.
Interlock The interlock LED emits red light when the interlock safety loop is
open. To find the location of the interlock fault in this state,
check the display on the SuperK Extreme laser system front panel
or the user interface software, which will display the relevant
information. The interlock LED emits green light when the
interlock loop is okay and emission can be initiated.
Power The power LED emits green light when the supply voltage from
the bus connection is as required. When the SuperK Extend-UV is
communicating on the digital bus, the LED flashes yellow and
green. If the supply voltage from the digital bus is too low, the
power LED emits red light.
3.3.3 Address Selector
All accessories communicating on the same bus must have a
unique address. This address is selected using the address
selector. The address selector has 16 possible settings from 0 to
F (hex). The selector must be set to a unique position before
powering up the SuperK Extreme laser system and accessories.
The current software control solution for the SuperK Extend-UV
does not allow simultaneous support or control of the SuperK
Extend-UV and other SuperK accessories on the same bus.
Therefore, the address selector setting for the SuperK Extend-UV
is not important at this time. More information on the control
software for the SuperK Extend-UV accessory can be found in
section 5.
3.3.4 Monitor Electrical Output (Optional)
The monitor electrical output port is a BNC connection through
which a voltage signal proportional to the power incident on an
optional power monitor photodiode is available. This voltage
signal can be used either directly to monitor performance or as a
feedback signal to stabilize the output within a specific
wavelength range by connecting this signal to the external
feedback connection on the back panel of the SuperK Extreme
laser system.
P a g e | 13
Further information on the subject of external feedback can be
found in the NKT Photonics application note: Using Power Lock
and external modulation with the SuperK Extreme. This
application note can be found on our website at
http://www.nktphotonics.com/application_notes_superk
P a g e | 14
4 Installation Warning Caution – Use of controls or adjustments or performance of
procedures other than those specified herein may result in
hazardous radiation exposure.
4.1 Electrical Connections
Turn Off
System Before making an electrical connection between the SuperK
Extreme laser system and the SuperK Extend-UV, make sure that
the SuperK Extreme system is completely turned off via the
mains switch on the back of the system. Failure to do so may
result in damage to the SuperK Extreme laser system or the
SuperK Extend-UV.
The SuperK Extend-UV is powered by and communicates with the
SuperK Extreme laser system via the SuperK external bus.
Because it is necessary to use custom control software to control
the Extend-UV, the SuperK Extreme laser system external bus
connection cannot simultaneously support other SuperK
accessories at this time.
Bus Input Connect the bus input port of the SuperK Extend-UV to the
external bus port on the back of the SuperK Extreme system with
the supplied 15-pin cable. See figures 4-1 and 4-2.
SuperK
Extreme Bus
Connection
Figure 4-1: Bus cable connected to the external bus of the SuperK Extreme
system.
Notice For clarity, only the electrical connections related to the SuperK
Extreme with the Extend-UV accessory are shown here. In order
for the SuperK Extreme system to work the power supply and the
door-switch interlock must also be connected. Please refer to the
instruction manual for the SuperK Extreme laser system for more
information.
P a g e | 15
Figure 4-2: Electrical bus connection to the Extend-UV accessory. In this
example there are no additional accessories and the bus through port is
terminated with an external bus interlock defeater.
Bus Through The SuperK Extreme laser system bus must be terminated with
an external bus defeater on the bus through port of the SuperK
Extend-UV (see figures 4-2 and 4-3). This device provides the
necessary short connection on pins 3 and 4 at the bus through
port (interlock loop). For more information please refer to section
5.2.2 in the SuperK Extreme instruction manual.
Figure 4-3: External Bus defeater
Cable All bus cables used with the SuperK Extreme laser system must
be shielded and no more than 3 meters in length.
Address
Selector It is not possible at this time for the communications bus to
simultaneously support the SuperK Extend-UV and other
accessories; therefore, the setting on the Extend-UV address
selector is not important at this time.
Notice Simultaneous control of the SuperK Extend-UV and other SuperK
accessories is possible with the use of a USB to RS485 adaptor
and a second terminal. For information on this device, visit our
website at http://www.nktphotonics.com/superk_accessories or
contact us via information supplied in section 9.2 of this manual.
P a g e | 16
4.2 Optical Connections
Turn Off
System Procedure for the optical connection:
Ensure the SuperK Extreme system is turned off via the mains switch on the back of the system.
Ensure that the SuperK Extend-UV is positioned and secured properly to an optical table or similar before
continuing the installation. The output collimator of the SuperK Extreme laser system
must be inserted into the optical input port of the SuperK
Extend-UV using the procedure outlined in this section. The location of the optical input port is shown in figures 3-2
and 3-3.
Figure 4-4 below demonstrates a view of the SuperK Extend-UV
with the SuperK Extreme collimator partly inserted to the optical
input port.
The letters in the figure indicate:
A: Release button for insertion and release of the collimator
B: Lock screw port to fix the collimator into position
Figure 4-4: Collimator partially inserted into the SuperK Extend-UV.
Notice The axial orientation of the SuperK Extreme output collimator is
restricted by a key on the collimator body indicated in figure 4-5.
The key mates with the key slot on the body of the Extend-UV
accessory at the bottom of the optical input port, which is also
shown in figure 4-5.
The letters in the figure indicate:
C: The collimator body key
D: The key slot at the optical input port of the SuperK Extend-UV
B A
P a g e | 17
Figure 4-5: Axial orientation key and slot for the SuperK Extreme collimator.
Procedure to mount the collimator :
Insert the collimator as far as possible into the optical input port.
Rotate the collimator such that the collimator key mates
with the accessory key slot. Press the collimator inward to assure that the key is well seated in the slot.
Secure the collimator by tightening the lock screw shown in figure 4-4.
Notice The locking screw should always be tightened before use
of the module. The release mechanism does not constitute an
automatic locking mechanism and does not provide stable fixation
of the collimator. This release serves only as a safety mechanism
in order to avoid a situation in which the collimator
unintentionally comes free and disengages from the module. Use
a 2.5 mm hexagonal key to tighten or loosen the lock screw
mechanism. Turn clockwise to lock the collimator into the SuperK
Extend-UV and counter-clockwise to release it.
Figure 4-6: Collimator completely inserted and locked into position.
Notice The interlock circuit on the SuperK Extend-UV ensures that the
SuperK Extreme laser system stops emitting laser radiation if the
collimator is removed from the body of the accessory during
operation.
D C
P a g e | 18
5 Control Software Warning Caution – Use of controls or adjustments or performance of
procedures other than those specified herein may result in
hazardous radiation exposure.
5.1 Software Description
Control software developed for the SuperK Extend-UV accessory
allows the user to adjust the UV output center wavelength with a
resolution of 0.1nm within the allowable wavelength range
specified by the model. The output bandwidth is generally much
larger than the tuning resolution; however, fine control of the UV
output center wavelength allows the user to fine-tune the output
wavelength to specifically match the intended application.
The custom control software does not allow for remote control of
the SuperK Extreme laser system at this time. It is necessary to
control the SuperK Extreme via the controls on the front panel of
the laser system. See sections 5.1 and 6 of the SuperK Extreme
laser system instruction manual for more details.
Notice It is currently not possible to operate the SuperK Extend-UV
using the standard SuperKontrol software. We at NKT Photonics
are working hard to develop a new, all-inclusive control program
that will include the SuperK Extend-UV as quickly as possible.
Check with us frequently for updates via the information supplied
in Section 9 of this manual or check our website at
www.nktphotonics.com/software for updates.
A stand in custom control program has been developed to allow
for direct control of the SuperK Extend-UV accessory via the
SuperK Extreme laser system. The following sections describe
the installation and operation of the custom control program.
5.2 Software Installation
It is necessary to establish a proper USB connection with the
SuperK Extreme laser system connected to the SuperK Extend-
UV accessory in order to use the provided control software. We
highly recommend using the Silicon Laboratories CP210x USB
to UART Bridge software driver to prevent communication
issues. Driver installation software has been included on the USB
key provided with the Extend-UV accessory. Alternatively, the
latest USB driver installation software may be downloaded from
the NKT Photonics website at www.nktphotonics.com/software.
P a g e | 19
Installation of this USB driver can be done either prior to or after
connecting the SuperK Extreme laser system to the host
terminal, but it is highly recommended that the USB driver be
installed prior to connection of the laser system to the SuperK
Extend-UV accessory.
USB Driver The following procedures describe the process to install the driver
software.
Step Description
1 Attach the provided USB key to the host terminal.
Allow the operating system a moment to recognize
the key. Open the key directory.
Alternatively if the driver installation software is
downloaded from the website, open the directory to
which the file was downloaded.
2 Run the installation software by double clicking on
the executable file
“CP210x_VCP_Win_XP_S2K3_Vista_7.exe”.
3 Click “Next” on the window that appears.
4 Read the License Agreement, choose to accept the
terms of the license agreement, and click “Next”.
P a g e | 20
5 Feel free to change the installation destination
directory if desired. When ready, click on “Next” to
proceed with the installation.
6 Click on “Install” to begin the installation.
7 Allow the installation process a few moments to
complete.
P a g e | 21
8 Ensure that the checkbox to launch the CP210xVCP
driver installer is marked and click “Finish” to begin
driver installation.
9 A new dialog box should appear. Feel free to change
the installation location if desired. When ready, click
the “Install” button to install the USB driver.
10 When installation is complete, click “OK” to close the
installation program.
Once it is possible to establish a connection between the SuperK
Extreme laser system and a host terminal, control software can
be installed to control the SuperK Extend-UV accessory. A
custom GUI containing the control software for the SuperK
Extend-UV accessory has been developed for interim use while
NKT Photonics works toward incorporating the Extend-UV into an
all-inclusive control software suite. Installation software for this
custom GUI has been included in a sub-folder labeled “Custom
GUI Installation Files” on the USB key provided with the Extend-
UV accessory.
P a g e | 22
Custom GUI
Installation The following procedures describe the process to install the
custom GUI and SuperK Extend-UV control software.
Step Description
1 Attach the provided USB key to the host terminal.
Allow the operating system a moment to recognize
the key. Open the key sub-directory “Custom GUI
Installation Files”.
2 Run the installation software by double clicking on
the executable file “setup.exe”. Allow the installer
program a few moments to initialize. The user will
see this window during initialization.
3 Feel free to change the installation destination
directory if desired. When ready, click on “Next” to
proceed with the installation.
P a g e | 23
4 Read the National Instruments software licence
agreement(s), choose to accept the terms of the
license agreement(s) and click “Next”.
5 The next screen of the dialog box will show what
programs are to be added or modified by the
installer. Click “Next” to proceed.
6 Installation will begin, and should take a few
minutes depending on the resources of the host
terminal. The user will be prompted to click either
“Next” or “Finish” when installation is complete,
depending on what NI files were added during the
installation process. Either selection prompt will
bring the user to step 7 of the custom GUI
installation process.
P a g e | 24
7 The user will be prompted to restart the computer.
Click “Restart” to complete the installation process.
5.3 Operation of the Extend-UV via the Custom GUI
Ensure that the SuperK Extreme laser system has been turned on
via the mains switch on the back of the system. Open the
custom GUI by starting executable file. This executable can be
found either through the start menu shortcut Programs > SuperK
UV-Extend GUI Ver 1.0 > SuperK UV-Extend Custom GUI Ver.
1.00 or in the directory established in step 3 of the installation
process above. If desired, it is possible to send a shortcut of this
executable to a more accessible location such as the computer
desktop. The window shown in figure 5-1 will appear on start up.
Figure 5-1: The control window of the custom GUI for the SuperK Extend-UV
accessory. Control Window
Functions A. Center wavelength control knob
B. Center wavelength selector/indicator
C. Connection state indicator
D. Interlock state indicator
E. UV port shutter state indicator
F. Visible port shutter state indicator
G. IR port shutter state indicator
H. Custom GUI exit button
A
B
C
D
E G F H
P a g e | 25
Notice It is necessary to control the SuperK Extreme laser system via
controls on the front panel of the system while the custom GUI is
active. Attempting to simultaneously run the custom GUI and
SuperKontrol on the same terminal may result in communications
errors with both the SuperK Extreme laser system and the
SuperK Extend-UV accessory. See sections 5.1 and 6 of the
SuperK Extreme instruction manual for more information on the
controls located on the front panel of the SuperK Extreme laser
system.
On start up, allow the control software a moment to establish a
connection with the SuperK Extreme laser system. Once a
connection is established, the custom GUI connection state
indicator (C) will become active and the interlock state indicator
(D) will match the interlock state of the SuperK Extreme laser
system as displayed on the front panel. The UV, visible and IR
port shutter indicators (E-G) will also be active, indicating
whether the respective shutter is open (green) or closed (red).
UV Output
Center
Wavelength
The center wavelength of the UV output beam can be adjusted by
either clicking and dragging the center wavelength control knob
(A) or typing in the desired wavelength in the field of the center
wavelength selector/indicator (B) and pressing “Enter”. An
adjustment to either control (A or B) will immediately update the
wavelength indication on the other control.
Once a new wavelength is chosen, the SuperK Extend-UV
accessory will immediately make the proper adjustments to
center the emitted wavelength at the entered value. Tuning
speed varies by model; the DUV model (A351-100-00) tunes at
30nm/s, while the UV model (A351-300-00) tunes at 75nm/s.
Notice The SuperK Extend-UV accessory output center wavelength can
only be adjusted within a certain operating range specific to the
model. If a wavelength outside of this range is entered into the
center wavelength selector/indicator field (B), the input will be
replaced by the wavelength at the edge of the operational range
closest to the submitted value.
Shutdown Before shutting down the SuperK Extend-UV accessory, it is
recommended to exit the custom GUI via the exit button (H).
The user will be prompted to confirm exit, and after confirmation
the control window will close. It is now safe to halt power to the
SuperK Extend-UV accessory via the mains switch on the back of
the SuperK Extreme laser system.
P a g e | 26
6 Optical Alignment Warning Caution – Use of controls or adjustments or performance of
procedures other than those specified herein may result in
hazardous radiation exposure.
The SuperK Extend-UV together with the SuperK Extreme laser
system constitutes a class 4 laser source and must be regarded
as a potential hazard to the operator. Please wear laser protective
eyewear while performing optical alignment and operation of the
SuperK Extend-UV.
UV Beam The UV optical output of the Extend-UV is a free-space beam with
typical beam parameters given in section 7.3. There is currently
no method developed by NKT Photonics for either multimode or
single-mode fiber coupling of the UV beam. There is, however, a
method for fiber coupling of visible and IR output using a fiber
delivery system (FDS).
6.1 Fiber Delivery System (FDS)
A complete FDS for the SuperK Extend-UV consists of a specially
prepared fiber termed a fiber delivery (FD) and a SuperK Connect
beam manipulator. If an FDS is to be used with the visible or IR
ports, it is important to attach the SuperK Connect modules to
the Extend-UV accessory before operating the SuperK Extreme
laser system.
Figure 6-1: Fiber delivery and SuperK Connect.
6.1.1 Attaching the FDS to the Extend-UV Accessory
To attach a SuperK Connect manipulator to the Extend-UV
accessory, use the following procedure. Identify the optical output port to which the FDS will be attached (see figure 3-2 for
port identification). If attached, remove the accessory cover plate covering the identified port. Attach the appropriate model SuperK Connect (IR or visible) to the desired port using four M3 x
6mm screws.
P a g e | 27
SuperK
Connect
Orientation
The orientation of an IR SuperK Connect with respect to the IR
output port is not critical and can be oriented in a manner that is
convenient for the user. Remember to consider access to the
manipulator alignment screws and the collimator locking screw
when choosing the orientation of the manipulator.
The correct orientation of a visible SuperK Connect with respect
to the visible port of the Extend-UV accessory will depend on
whether or not the fiber to which the output is coupled is a
polarization maintaining fiber (-PM). If the fiber is non-PM, the
orientation of the manipulator is not critical and can be oriented
in a manner that is convenient for the user. If the fiber is PM, it
will be necessary to mount the manipulator in the “horizontal”
orientation in order to couple the polarization of the visible beam
to the slow-axis of the fiber. See figure 6-2 for an example of
“horizontal” and “vertical” mounting of a SuperK Connect
manipulator with the SuperK Extend-UV accessory.
Figure 6-2: SuperK Connect manipulator mounted to the visible port of the
SuperK Extend-UV accessory in the vertical (left) and horizontal (right) position.
6.1.2 Alignment of the FDS
With all electrical and optical connections executed according to
the instructions in section 4 and with the FDS manipulators in
place, it is now okay to turn on the SuperK Extreme laser system
on using the mains switch on the back of the system. Proceed by
operating the SuperK Extreme laser system as described in the
SuperK Extreme instruction manual.
Coarse
Alignment of
FDS
Before installing an FD collimator into the SuperK Connect, a
coarse pre-alignment is required. Turn on the SuperK Extreme
laser system, allow for a low level of laser light emission and
open the corresponding port aperture shutter. Steer the beam
using the manipulator adjustment screws until free-space output
from the SuperK Connect can be seen.
P a g e | 28
Continue coarse alignment using the alignment tool provided as
shown in figure 6-3 and using the following procedure. If
available, an optical power meter may prove useful in the
following procedure. Remember to halt laser emission from the
SuperK Extreme laser system every time the alignment tool is
taken out of the path of the optical beam.
Coarse alignment procedure:
Insert alignment tool into the SuperK Connect, with the
inner pinhole nearest to the laser source.
Adjust alignment screws to achieve the highest power
through the pinhole.
Reverse the alignment tool. Adjust alignment screws again
to obtain the highest power through the pinhole.
Repeat the above alignment procedure until optimum
alignment has been achieved.
Figure 6-3: Alignment tool used with the SuperK Connect.
After coarse alignment is achieved, it is possible to complete
alignment to an FD module (see figure 6-4). Halt emission from
the SuperK Extreme laser system, remove the alignment tool
from SuperK Connect, and insert the FD collimator into the
SuperK Connect. Push the FD input collimator tube completely
into the Connect inlet.
Notice The axial orientation of the FD is limited by the key on the
collimator and key slot at the Connect output port, similar to the
system used between the SuperK Extreme collimator and the
Extend-UV optical input port (see section 4.2).
P a g e | 29
Figure 6-4: An example of a fiber delivery (FD) unit with an input collimator and
an FC/APC output connector.
While in the correct axial position and with the FD input collimator
inserted as far as possible into the SuperK Connect output
aperture port, secure the FD collimator tube by tightening the
lock screw as indicated in figure 6-5.
Figure 6-5: Fiber delivery lock screw position in the SuperK CONNECT.
Depending on user specification, the locking screw may be on the top or bottom
of the SuperK Connect.
Warning The SuperK system should not be operated at full power if the
fiber coupling efficiency to the fiber delivery system has not been
optimized. Running the fiber delivery system in a state with poor
coupling for extended periods of time may be detrimental to the
performance of and/or permanently damage the fiber delivery
system. With an optimized coupling to the fiber delivery system,
the input power to the fiber delivery system should be limited to
below 500 mW.
Lock screw
position
P a g e | 30
Fine Alignment
of FDS Procedure for optimizing output power:
Allow for a low amount of laser emission from the SuperK
Extreme laser system. There should be weak optical output at the distal end of the
FDS. If not, shut the SuperK Extreme laser system down
and repeat the coarse alignment procedure. Monitor transmitted light through the FDS at the distal end
of the FD using a power meter or optical spectrum analyzer.
Adjust optical alignment using the four alignment screws
on the FDS manipulator. Alignment of the optical beam along the lateral axes is controlled by fine tuning of the
alignment screws in pairs. These pairs are designated with either “I” or “II” (see figure 6-6).
Optimize FDS optical throughput by optimizing each lateral
axis one at a time. For example, repeatedly adjust the alignment screws designated with “I” one after the other
until maximum throughput is achieved. Repeat optimization on both axes until optimum alignment
has been achieved.
Figure 6-6: Markings on a SuperK Connect to denote alignment screw pairs.
Notice the “I” and “II” indicators marked with a red circle.
The SuperK Extend-UV is now ready for use. Proceed by
operating the SuperK Extreme laser system as described in the
SuperK Extreme instruction manual.
P a g e | 31
7 Optical Output Parameters Warning Caution – Use of controls or adjustments or performance of
procedures other than those specified herein may result in
hazardous radiation exposure.
The SuperK Extend-UV together with the SuperK Extreme laser
system constitutes a class 4 laser source and must be regarded
as a potential hazard to the operator. Please wear laser protective
eyewear while performing optical alignment and operation of the
SuperK Extend-UV.
Notice The geometric properties for the visible and IR beams discussed
in this section should only be considered when the FDS as
described in section 6 is not utilized on those ports.
7.1 Beam Coordinate Planes
For a complete description of geometric and polarization
parameters of the output beams of the SuperK Extend-UV
accessory, it is necessary to establish a frame of reference for
each beam. We define the x-plane as being parallel to the
mounting surface for the accessory, or the plane containing all of
the optical output ports for the accessory. The y-plane for each
beam is orthogonal to the x-plane and contains the propagation
axis of the respective beam.
7.2 Visible and IR Optical Output Parameters
7.2.1 Visible and IR Beam Wavelength Coverage
The optical output beam from the SuperK Extreme collimator is
divided chromatically into an IR beam and a visible beam by a
long-pass filter within the Extend-UV accessory. The wavelength
of the optical edge of the filter depends on the model version of
the SuperK Extend-UV accessory. Operational output spectra at
the IR and visible ports will depend heavily on the SuperK
Extreme laser system used; however, typical filter edge
wavelength information can be gathered from the spectral traces
given in figures 7-1 and 7-2 for the DUV and UV models,
respectively. For example, the wavelength range for a beam
exiting the visible port of the DUV model starts at the lower
wavelength edge of the source used and ends at approximately
865nm.
P a g e | 32
Figure 7-1: Output spectra from the visible and IR ports of the DUV model
(A351-100-00) of an Extend-UV using an EXW-12 SuperK Extreme laser source.
Figure 7-2: Output spectra from the visible and IR ports of the UV model (A351-
300-00) of an Extend-UV using an EXW-12 SuperK Extreme laser source.
7.2.2 Visible and IR Beam Polarization Properties
The polarization state of the IR beam depends on the output
power level of the SuperK Extreme laser system. At low output
power the IR output beam is often elliptically polarized with both
the degree of polarization and plane of the polarization varying
with time. When the output power of the SuperK Extreme laser
system is increased the degree of polarization decreases, and at
maximum power the beam is close to unpolarized.
0,0
0,2
0,4
0,6
0,8
1,0
350 650 950 1250 1550
Norm
alized I
nte
nsity (
lin)
Wavelength [nm]
Vis. Port
IR Port
865 nm
0,0
0,2
0,4
0,6
0,8
1,0
350 650 950 1250 1550
Norm
alized I
nte
nsity (
lin)
Wavelength [nm]
Vis. Port
IR Port
1025 nm
P a g e | 33
The visible output beam has a high degree of polarization
regardless of the power level of the SuperK Extreme driving laser.
The polarization axis lies in the x-plane of the visible beam as
defined in section 7.1. It is possible to rotate the plane of
polarization for specific wavelength ranges using a zero-order or
achromatic half-wave plate, for example Thorlabs part number
AHWP10M-600. This will of course not preserve the degree of
polarization for the entire wavelength range of the beam and it is
recommended to add a clean-up polarizer to the beam path after
the half-wave plate to ensure a high degree of polarization.
Notice If an FDS is used to couple the visible beam to an FDx-PM fiber it
is important to orient the SuperK Connect in the “horizontal”
position to couple the beam polarization axis to the slow axis of
the optical fiber for stable operation (see section 6).
7.2.3 Visible and IR Beam Geometric Parameters
The geometric beam parameters for the visible and IR beams
follow the spot size and divergence given for laser emission
directly out of the SuperK Extreme collimator, with the distinction
that these beams propagate some distance away from the
collimator before reaching their respective exit apertures. Typical
beam diameter and divergence data is given in section 5.2.13 of
the SuperK Extreme instruction manual, and the distances from
the SuperK Extreme collimator to the output apertures for the
visible and IR beams are given in table 7-1.
Optical port Distance from collimator
Visible port 270 mm
IR port 160 mm
Table 7-1: Optical distances from the SuperK Extreme output collimator to the
visible and IR output apertures of the SuperK Extend-UV accessory.
7.3 UV Optical Output Parameters
7.3.1 UV Beam Spectral Properties
The optical output center wavelength of the UV beam is
adjustable to within a resolution of 0.1nm within a window of
operation specific to the model type. The spectral bandwidth of
the UV output beam varies with the output center wavelength
from about 2-5nm for the DUV model and about 5-13nm for the
UV model. The output spectral bandwidth is a function of the
internal optics and is not adjustable at a given center wavelength.
P a g e | 34
The average output power of the UV beam relies heavily on the
specific model SuperK Extreme laser system used, the driving
laser power level, and the wavelength at which the Extend-UV is
set to. Figure 7-3 illustrates typical spectral output traces
adjusted such that the peak of each trace indicates the expected
UV output power for the two standard Extend-UV models using an
EXR-20 SuperK Extreme laser system set to full power as the
source. The FWHM spectral bandwidth is included for each trace.
Figure 7-3: Typical UV output power per line and spectral bandwidth with
respect to center wavelength for the two standard Extend-UV models when
coupled with an EXR-20 SuperK Extreme laser system at full power.
7.3.2 UV Beam Polarization Properties
The UV output beam has a high degree of polarization regardless
of the power level of the SuperK Extreme driving laser. The
polarization axis lies in the x-plane of the UV beam as defined in
section 7.1.
It is possible to rotate the plane of polarization for specific
wavelength ranges using a zero-order or achromatic half-wave
plate. If it is necessary to rotate the polarization axis of the UV
beam, we recommend using Thorlabs part numbers WPH05M-308
with the DUV model and WPH05M-405 with the UV model. This
will of course not preserve the degree of polarization for the
entire wavelength range of the beam and it is recommended to
add an -BBO clean-up polarizer to the beam path after the half-
wave plate to ensure a high degree of polarization.
P a g e | 35
7.3.3 UV Beam Geometric Parameters
Due to internal beam shaping optics used within the SuperK
Extend-UV accessory, the UV output beam is astigmatic, and thus
the beam parameters are not identical in the lateral dimensions.
The optics chosen provide maximum beam circularity
approximately 65-70mm from the UV output aperture for most of
the output center wavelength range of the Extend-UV accessory.
In the x-plane, the UV output beam has a beam waist outside of
the accessory enclosure with typical values for the waist location
ranging from 100mm to 200mm beyond the UV output aperture,
depending on the output center wavelength. Typical values for
the beam diameter at the exit aperture and beam waist, spot size
location, and far field divergence angle in the x-plane are given
for various center wavelengths in table 7-2.
The UV output beam in the y-plane slowly diverges for all
wavelengths; therefore, no information is given about the beam
waist in this plane. Alternatively, the beam diameter at the exit
aperture and the far field beam divergence angle is given in table
7-2 for various center wavelengths.
Center
Wavelength
[nm]
Diam. at
aperture
[mm]
Diam. at
waist (2 0)
[mm]
Waist
location
[mm]
Beam div.
angle ( )
[mrad]
x y x y x y x y
270 1.25 0.62 0.53 -- 100 -- 5.86 0.52
300 1.35 0.73 0.64 -- 115 -- 5.02 0.72
330 1.38 0.83 0.79 -- 134 -- 4.26 0.94
350 1.47 0.95 0.88 -- 150 -- 4.03 1.08
410 1.63 1.15 1.16 -- 178 -- 3.25 1.5
470 1.67 1.4 1.3 -- 195 -- 2.67 1.86
Table 7-2: Typical geometric beam parameters given for UV optical output from
the Extend-UV at the exit aperture. This data was gathered using an EXW-12
SuperK Extreme laser system as the source.
For better visualization of geometric properties of UV beam
propagation, the typical beam diameter as a function of distance
from the accessory in the x- and y-plane is given in figures 7-4
and 7-5 for various center wavelengths.
P a g e | 36
Figure 7-4: Typical beam diameter of the DUV model of the SuperK Extend-UV
accessory for several center wavelengths in both A) the x-plane and B) the y-
plane as a function of distance from the output aperture.
A)
B)
P a g e | 37
Figure 7-5: Typical beam diameter of the UV model of the SuperK Extend-UV
accessory for several center wavelengths in both A) the x-plane and B) the y-
plane as a function of distance from the output aperture.
A)
B)
P a g e | 38
8 Disconnecting Warning Caution – Use of controls or adjustments or performance of
procedures other than those specified herein may result in
hazardous radiation exposure.
Always turn off the SuperK Extreme laser system via the mains
switch on the back of the system before disconnecting the SuperK
Extend-UV. It is not sufficient to stop emission from the system.
Failure to comply may damage or destroy the SuperK Extreme
laser system or any connected SuperK accessory.
Procedure to disconnect the SuperK Extend-UV:
Halt emission and turn off the SuperK Extreme laser
system main power.
Unplug the bus cable from both the SuperK Extreme laser system external bus port and the SuperK Extend-UV bus
input port. Remove the external bus interlock defeater from the
Extend-UV bus through port and insert it into the SuperK Extreme system external bus port (see the SuperK Extreme system instruction manual).
Disconnect the SuperK Extreme laser system output collimator from the SuperK Extend-UV optical input port.
Loosen the lock screw and press the release button while pulling on the back of the collimator body.
Mount the SuperK Extreme output collimator in its new
position. If desired, turn on the SuperK Extreme laser system and
operate the system according to the instruction manual provided for that system.
P a g e | 39
9 Service & Support Warning Caution – Use of controls or adjustments or performance of
procedures other than those specified herein may result in
hazardous radiation exposure.
Service There are no user serviceable components inside the SuperK Extend-
UV accessory. In case of malfunction, NKT Photonics should be
consulted.
The unit is sealed with a label “WARRANTY VOID IF REMOVED”.
It is strictly prohibited to remove the chassis cover.
Storage If required, the SuperK Extend-UV should be stored in a dry and cool
place (15-20°C). The optical input and output ports should be
protected using either tape or appropriate sized dust caps. Avoid
exposing the unit to vibrations or mechanical shock.
9.1 Cleaning
Chassis
Cleaning If cleaning of the SuperK Extend-UV unit is required, the chassis
may be cleaned with a damp cloth.
Fiber Tip
Cleaning The fiber connector on the FD may occasionally require some
cleaning of the fiber tip. Only use cleaning tools that are
specifically designed to be used with optical fibers. Always use
extreme caution when cleaning fibers. Examples of appropriate
cleaning tools are lens cleaning tissue (lint free wipes) as shown in
figure 9-1 or an optical fiber cleaning tool as shown in figure 9-2.
Figure 9-1: Lens cleaning tissue (lint free wipes).
P a g e | 40
Figure 9-2: An appropriate optical fiber cleaning tool.
9.2 Support
Support Technical support NKT Photonics can be contacted for technical information
regarding issues with use of the SuperK Extend-UV or other
associated accessories.
Contact
Information Contact information: NKT Photonics A/S
Blokken 84 DK-3460 Birkerød Denmark
Phone (support): +45 4578 7787
Phone (general): +45 4348 3900 Fax (general): +45 4348 3901
E-mail:
Online support page:
http://www.nktphotonics.com (click on support)
P a g e | 41
10 Dimensions
Parameter Conditions Value Unit
Height
See drawings below
67.6
mm Width 287.0
Depth 211.5
Weight 5.9 kg
P a g e | 42
NKT Photonics
Blokken 84 3460 Birkerød
Denmark
Phone: +4543483900 Fax: +4543483901
www.nktphotonics.com
