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ELI Beamlines, Apr 10
[email protected] www.clf.rl.ac.uk
Facilities
• Synchrotrons
• Neutron Scattering
• Advanced Lasers
• FELs
• Computing
• Telescopes
• ….
• Accelerator Science
• Particle Physics
• Astronomy
• Space Physics
• Nuclear Physics, …
OUTLINE FOR TODAY
•Diode Pumped Solid State Lasers
(DPSSL) - DIPOLE
•Optical Parametric Chirped Pulse
Amplification (OPCPA) – Vulcan 10 PW
•Their combined relevance to ELI
Cristina Hernandez-Gomez, Ian Ross, Ian Musgrave, Wassem
Shaikh, Andrey Lyachev, Yunxin Tang, Trevor Winstone,
Oleg Chekhlov, Rob Clarke, Rob Heathcote, Kate Lancaster,
Marco Gallimberti, Paul Holigan, Pavel Matousek, Martin Tolley,
David Neely, Peter Norreys, Steve Hancock, Brian Wyborn,
Hiromitsu Kiriyama1, Martin Divoky2, Geoff New3
Klaus Ertel, Mike Filton1APRI, Japanese Atomic Energy Research Institute,
2Institute of Physics, Czech Academy of Sciences, Prague3Imperial College, London
ELI Beamlines, Apr 10
[email protected] www.clf.rl.ac.uk
CompressHigh Energy
DepletedPumpOptical
Parametric
Amplification
Crystal
Ultra Short Pulse
Stretch
Input DPSSL Pump
Ross et al, Optics Communications, 144, (1997) 125
Dubietis et al, Optics Communications, 88, (1992) 437High Energy Idler Wave
Optical Parametric Chirped Pulse Amplification
ELI Beamlines, Apr 10
[email protected] www.clf.rl.ac.uk
Worlds First Diode Pumped Laser
Uranium Laser
~ 0.1 % Efficient ~60% Efficient
Concept and Technology is not “new” at all
ELI Beamlines, Apr 10
[email protected] www.clf.rl.ac.uk
0 1 2 3Pump Duration /
f
0.0
0.2
0.4
0.6
0.8
1.0
Stored Energy
Storage Efficiency
ELI Beamlines, Apr 10
[email protected] www.clf.rl.ac.ukLUCIAIntegrated HeadPOLARIS / Dresden
PFS / PFS-Pro Fluid Dynamics of CoolingDIPOLE
ELI Beamlines, Apr 10
[email protected] www.clf.rl.ac.uk
Yb:YAG
Slabs
Window
He Gas in
~150 K
Vanes
He Gas out
ELI Beamlines, Apr 10
[email protected] www.clf.rl.ac.uk
• Needs good thermo-mechanical properties crystal
• Need large sizes glass
• Ceramics combine best of both
• Can be made with optical quality
• 1 kJ per beam would require ~ 15 x 15 cm aperture slabs
• Feasible - 11 cm available now - scaleable
• Variable doping
• Co-sintered cladding possible
• Non-cubic demonstrated
ELI Beamlines, Apr 10
[email protected] www.clf.rl.ac.uk
• Doping of each slab is different
• Slabs in centre more highly doped
• Pseudo-constant longitudinal pumping and
gain
• Excellent Transverse ASE control
• Optimised Thermal Management1 - 40 cm
ELI Beamlines, Apr 10
[email protected] www.clf.rl.ac.uk
High rep rate
ps, mJ Pump
Seed
LBOLBO
Stand alone
~3ns shaped
pulse 2 Hz
rate
Long stretch ~3 ns
Diagnostic compressor
Phase ISeed laser 300nm
bandwidth
LBO
High rep rate
ps, mJ Pump
Seed
LBOLBO
Stand alone
~3ns shaped
pulse 2 Hz
rate
Long stretch ~3 ns
Diagnostic compressor
Phase ISeed laser 300nm
bandwidth
LBO
KD*P KD*P
>500 J
600 J
Additional Vulcan2 x 1.2 kJ 3 ns208 beamlines SHG
SHG
527 nm
600 J
527 nm
KD*P KD*P
600 J
Additional Vulcan2 x 1.2 kJ 3 ns208 beamlines SHG
SHG
527 nm
600 J
527 nm
Phase 2
Existing “TAP”
Interaction Area
Interaction Chamber
300 J, 30 fs
+ 1 PW Beam line
New “High Yield”
Interaction Area
Interaction Chamber
300 J, 30 fs
+ TW Beam lines
EX
IST
ING
VU
LC
AN
Compress
KD*P KD*P
>500 J
600 J
Additional Vulcan2 x 1.2 kJ 3 ns208 beamlines SHG
SHG
527 nm
600 J
527 nm
KD*P KD*P
600 J
Additional Vulcan2 x 1.2 kJ 3 ns208 beamlines SHG
SHG
527 nm
600 J
527 nm
Phase 2
Existing “TAP”
Interaction Area
Interaction Chamber
300 J, 30 fs
+ 1 PW Beam line
New “High Yield”
Interaction Area
Interaction Chamber
300 J, 30 fs
+ TW Beam lines
EX
IST
ING
VU
LC
AN
Compress
ELI Beamlines, Apr 10
[email protected] www.clf.rl.ac.uk 17
5 fs “Rainbow” Oscillator
600 nm – 1000 nm
Delay & Condition
800 nm mJ+ Amplifier
kHz CPA
~ 810 nm
< 20 nm
~ ps
2nd Harmonic Generation
& Condition
~ 405 nm
~ 10nm
~ ps
~ 720 nm
~ 150 nm
~ 810 nm
2- 20 nm
LBO SIGNAL
~ 900 nm
~ 180 nm
E ~ 700 μJ
IDLER
ELI Beamlines, Apr 10
[email protected] www.clf.rl.ac.uk
Collimating Lens
Beam In600 Sq
TurningMirror
FocussingParabola
Collimating Parabola & Plasma Mirror
SwitchingMirror
TurningMirror
Beam Out450 Sq
2 Pairs of Gratings
ELI Beamlines, Apr 10
[email protected] www.clf.rl.ac.uk
•
•
•
•
•
•
Gold Grating, S-polarization
0.10.1
0.2
0.2
0.4
0.3
0.3
0.7
0.6
0.5
0.8
0.9
0.80.7
0.60.5
0.40.3
0.2
0.1
0.9
Duty Cycle
0.0 0.2 0.4 0.6 0.8 1.0
Gra
tin
g D
ep
th (
Na
no
me
ters
)
0
100
200
300
400
500
600
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
ELI Beamlines, Apr 10
[email protected] www.clf.rl.ac.uk
“ ”
• Other key issues need to
improve also, e.g.
• Reliability (x10)
- Brightness (x2)
- Spectral Purity (x5)
- System Efficiency
