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

Question

Quizplus · Accepted Answer

The stimulated emission of photons occurs when a photon of the same wavelength as the emitted photon interacts with an excited atom, causing the atom to emit another photon in phase with the stimulating photon. This is the basis of the laser, and it requires the nearby presence of photons of the same wavelength as those emitted. The high voltage, high flux of electrons, and high temperature are not directly involved in the stimulated emission process.

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