The spectral width of emission from the single mode device is
A)smaller than broadened transition line-width
B)larger than broadened transition line-width
C)equal the broadened transition line-width
D)cannot be determined

Question

Quizplus · Accepted Answer

The spectral width of emission from a single mode device is smaller than the broadened transition line-width because a single mode device operates over a very narrow range of wavelengths, leading to a more precise and narrow emission spectrum compared to the broader spectrum of the transition line-width.

The Spectral Width of Emission from the Single Mode Device