Population inversion is important for the generation of a laser beam because it assures that:
A)spontaneous emission does not occur more often than stimulated emission
B)photons do not split too rapidly
C)more photons are emitted than are absorbed
D)photons do not collide with each other
E)photons do not make upward transitions

Question

Quizplus · Accepted Answer

Population inversion ensures that there are more atoms in an excited state than in the ground state, allowing stimulated emission to dominate over absorption, leading to the amplification of light and generation of a laser beam.

Population Inversion Is Important for the Generation of a Laser