Question

Question:

In stimulated emission process the minimum numbers of coherent photons are

Option 1:

1

Option 2:

2

Option 3:

3

Option 4:

4

​

Answer 1

The atom absorbs the photon's momentum and energy, moving to a higher internal energy state as well as recoiling.... Under the correct version of stimulated emission the emitted photon moves in the same direction as the incident photon.

Answer 2

Answer: it is 2

Explanation: a single photon interacting with an excited atom can therefore result in two photons being emitted and if the emitted photons are viewed as a wave the stimulated emission will oscillate at the incoming lights frequency and be in phase coherent resulting in amplification of the original light wave intensity.