16-07-2012, 01:00 PM
lasers
Presentation on lasers.pptx (Size: 188.35 KB / Downloads: 33)
The term "laser" originated as an acronym for Light Amplification by Stimulated Emission of Radiation.
Lasers are used to cut precise patterns in glass and metal, to reshape corneas to correct poor vision, and to provide intense heat in controlled fusion experiments. But we also use lasers as very precise light sources in supermarket checkout lines, CD players, and to transmit most telephone signals
Gas lasers
Chemical lasers
Excimer lasers
Solid-state lasers
Fiber lasers
Photonic crystal lasers
Semiconductor lasers
Dye lasers
Free electron lasers
Bio laser
consumer electronics
information technology
science
medicine
industry
law enforcement
entertainment
and the military