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By
• Anas Mohamed
• Mohamed Elmallah
• Anas Mohamed
• Mohamed Elmallah
• Amr Mousa
Contents
1
Main components of laser2
Types of Laser3
Laser Applications4
The concept of Laser
Dr Zewail Nobel Prize
L
A
S
E
R
Light
amplification
What is LASER ??
by
stimulated
emissionof
radiation
Laser LightOrdinary Light
The Mechanism of Laser
The Mechanism of Laser
Electrons transit between energy levels by
Spontaneous
absorption
Spontaneous
emissions
Stimulated
emissions
Laser is basically
produced by
Stimulated
Emission
Components of Laser
MirrorsActive
MediumFlashLight
Lasers mainly consist of three major Parts
Company Logo
Solid-state lasers
Have lasing material distributed in a solid matrix
Gas lasers
Excimer lasers
Use reactive gases, such as
chlorine and fluorine, mixed
with inert gases such as argon,
krypton or xenon
Dye lasers
In these lasers the lasing medium is made-up of one or a
mixture of gases or vapors. The most common of all gas
lasers is the helium-neon (He-Ne) laser
Semiconductor lasers
Sometimes called diode lasers, are not
solid-state lasers. These electronic devices
are generally very small and use low power
LASIK surgery uses a laser light in
order to correct near or far
sightedness
Eye surgery
Skin Care
• Removing inner layers of skin
• Hair removal
• Freckles removal
• Skin whitening
Fiber Optics
Fiber optics offer faster speeds of Internet connectivity as
compared to cable internet and DSL. Fiber optic cables
use signals transmitted by beams of laser light and suffer
from less signal degradation than copper cables.
kidney stone treatment
In medicine
dentistry
hair
removal
In the military
Rockets guidance Radar Systems
In electronics
CDs & DVDs
LASER printers
HologramsBarcode scanners
In the Industry
Cutting Heating materials
Damanhour
February 26, 1946
The Femtosecond is
1
1,000,000,000,000,000
Millionth Billionth
of one second
7 Times in one second
V=300,000 Km/sec
in one femtosecond !!
Dr.Ahmed Zewail
California Institute of Technology
1999 Nobel Prize in Chemistry
The World's Fastest Camera
4D Electron Microscopy
The Era of Laser-Selective Chemistry
1. "Press Release: The 1999 Nobel Prize in Chemistry".
Nobelprize.org. Retrieved 12 February 2011.
2. http://whatis.techtarget.com/definition/laser
3. http://www.phy.cuhk.edu.hk/phyworld/articles/laser/laser_e.html
4. The Birth of Fiber Optics. inventors.about.com
5. "laser". Reference.com. Retrieved May 15, 2008.
6. Prized Science 2011 - Episode 1 - Designing the World's
Fastest Camera 2
7. How do lasers work- - Naked Science Scrapbook - YouTube
References
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