Laser Beam is produced due to _____
a) spontaneous emission
b) stimulated emission followed by spontaneous emission
c) spontaneous emission followed by Spontaneous absorption
d) spontaneous absorption leading to “population inversion” and followed by stimulated emission
Answer:
d) spontaneous absorption leading to “population inversion” and followed by stimulated emission
Explanation:
The primary operation of a laser is to generate a coherent (both temporal and spatial) beam of light through “light amplification” using “stimulated emission.”
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