A population inversion is a circumstance within a laser system in which there are ______ atoms with their electrons in an upper excited state than in a specific preferred lower state.
A)more
B)fewer
C)the same amount
D)ionized

Question

Quizplus · Accepted Answer

In a population inversion, there are more atoms with their electrons in an upper excited state than in a specific preferred lower state. This is necessary for laser operation to occur.

A Population Inversion Is a Circumstance Within a Laser System