One Photon at a Time
Most recent answer: 03/17/2009
Q:
why in photoelectric effect an electron absorbs only one photon.
- sachin (age 16)
lko,india
- sachin (age 16)
lko,india
A:
In principle you can have absorption of multiple photons in the photoelectric effect. In practice the probability is very very small under ordinary circumstances. If you had a strong enough laser beam you could probably observe the effect.
LeeH
Multiple (two) photon absorption to drive fluorescence is now used in some special microscopes. It does require well-focused lasers, as well as molecules which are good at absorbing those two photons. Mike W.
LeeH
Multiple (two) photon absorption to drive fluorescence is now used in some special microscopes. It does require well-focused lasers, as well as molecules which are good at absorbing those two photons. Mike W.
(published on 03/17/2009)