- #1
Cheman
- 235
- 1
When we have stimulated emisson as in a laser, a photon from a spontaneous emission makes an exited electron unstable which then falls back to its ground state releasing as 2nd photon. But why does the electron not just absorb the 2nds photon, move to an even higher energy level and then fall back to grounbd state releasing 1 very high energy photon?
Thanks in advance. :-)
Thanks in advance. :-)