The stimulated emission of photons from the excited atoms in a gas laser is prompted by which of the following?
A) nearby presence of photons of same wavelength as those emitted
B) high flux of electrons
C) high voltage
D) high temperature

Question

Quizplus · Accepted Answer

Stimulated emission in a gas laser occurs when an excited atom is prompted to emit a photon due to the presence of another photon with the same wavelength, phase, and direction.

The Stimulated Emission of Photons from the Excited Atoms in a Gas