"Exploring laser systems" This presentation is about the concept of generating laser beams and its practical applications - The main part of the presentation was to explain Dr.Ahmed Zewail's achievements in the femtochemistry field which lead him to win the nobel prize in chemistry in 1999.

1. LOGO
By
• Anas Mohamed
• Mohamed Elmallah
• Anas Mohamed
• Mohamed Elmallah
• Amr Mousa

2. Contents
1
Main components of laser2
Types of Laser3
Laser Applications4
The concept of Laser
Dr Zewail Nobel Prize

4. L
A
S
E
R
Light
amplification
What is LASER ??
by
stimulated
emission
of
radiation

5. Laser LightOrdinary Light

6. The Mechanism of Laser

7. The Mechanism of Laser

8. Electrons transit between energy levels by
Spontaneous
absorption
Spontaneous
emissions
Stimulated
emissions
Laser is basically
produced by
Stimulated
Emission

10. Components of Laser
Mirrors
Active
Medium
Flash
Light
Lasers mainly consist of three major Parts

11. Company Logo

13. Solid-state lasers
Have lasing material distributed in a solid matrix

14. Gas lasers

15. Excimer lasers
Use reactive gases, such as
chlorine and fluorine, mixed
with inert gases such as argon,
krypton or xenon

16. 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

17. Semiconductor lasers
Sometimes called diode lasers, are not
solid-state lasers. These electronic devices
are generally very small and use low power

19. LASIK surgery uses a laser light in
order to correct near or far
sightedness
Eye surgery

20. Skin Care
• Removing inner layers of skin
• Hair removal
• Freckles removal
• Skin whitening

21. 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.

22. kidney stone treatment
In medicine
dentistry
hair
removal

23. In the military
Rockets guidance Radar Systems

24. In electronics
CDs & DVDs
LASER printers
HologramsBarcode scanners

25. In the Industry
Cutting Heating materials

27. Damanhour
February 26, 1946

34. The Femtosecond is
1
1,000,000,000,000,000
Millionth Billionth
of one second

35. 7 Times in one second
V=300,000 Km/sec

36. in one femtosecond !!

37. Dr.Ahmed Zewail
California Institute of Technology

38. 1999 Nobel Prize in Chemistry

39. The World's Fastest Camera

43. 4D Electron Microscopy

48. The Era of Laser-Selective Chemistry

52. 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

53. LOGO