1. By: Hassan, Andrea, and Chaz

2.  http://www.youtube.com/watch?v=XRLRSdg vLg0 http://www.youtube.com/watch?v=XRLRSdg vLg0

3.  In 1916 Albert Einstein the foundation of invention of laser in ground breaking coefficient E= mc.  In 1960 was discovered helium and ruby laser.  In 1961 spectra physics was founded  1963 the ion laser and argon laser was born.

4. LASERMASER  L ight A mplification by the E mission S timulated of R adiation  M icrowave A mplification by S timulated E mission of R adiation.

5.  Gas  Chemical  Solid state  Semiconductor  Dye  Metal-vapor  Other types

6. Helium-neon laser 632.8 nm (543.5 nm, 593.9 nm, 611.8 nm, 1.1523 μ m, 1.52 μ m, 3.3913 μ m)nm μ m Electrical discharge Argon laser 454.6 nm, 488.0 nm, 514.5 nm (351 nm, 363.8, 457.9 nm, 465.8 nm, 476.5 nm, 472.7 nm, 528.7 nm, also frequency doubled to provide 244 nm, 257 nm)frequency doubled Electrical discharge Krypton laser 416 nm, 530.9 nm, 568.2 nm, 647.1 nm, 676.4 nm, 752.5 nm, 799.3 nm Electrical discharge Xenon ion laser Many lines throughout visible spectrum extending into the UV and IR.UVIR Electrical discharge Nitrogen laser 337.1 nmElectrical discharge

8. TypesWavelengthPump SourcesApplication Hydrogen fluoride Laser 2.7 to 2,9 μ mChemical reaction in burning jet of ethylene and nitrogen Used in search weaponry by the U.S. DOD opprated in continuous wave made, can have power in the megawatt. Deuterium fluoride laser ~3800 nm ( 3.6 to 4.2 μ m) (~ 90% Atm transmittance Chemical reactionMiracl, pulsed energy Projectile & tactical high energy laser

9.  The pinpoint beam of a laser can focus precisely on a target and make highly delicate incisions. This new found precision achieved by using lasers has drastically changed modern medicine.  High precision operations are now made possible thanks to lasers. Let's take a look at a few examples where lasers are used in various medical procedures.

10.  Lasers make fantastic rulers. They measure distances with incredible accuracy. There are two major ways a laser can do this.  One way a laser can measure distance is by time of flight. The other method is called interferometry.