General Knowledge - Technology - Discussion

29. 

After the first photons of light are produced, which process is responsible for amplification of the light?

[A]. Blackbody radiation
[B]. Stimulated emission
[C]. Planck's radiation
[D]. Einstein oscillation

Answer: Option B

Explanation:

The word "laser" is actually an acronym for light amplification by stimulated emission of radiation. Atoms or molecules of the active medium that have been excited to a higher energy level are stimulated by a passing photon to relax to a lower energy level and emit a photon that is indistinguishable from the passing photon, thereby increasing the number of photons like the incident one.

Priyank Rajput said: (Feb 22, 2012)  
LASER stands for actually LIGHT AMPLIFICATION by STIMULATED EMMISION of RADIATION.As name shows stimulated emission is responsible for the amplification which is a process in which a photon emitts during spontaneous forced by pumping process.

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