Saturated absorption: instanteneous, or does it produce lasting effects?


by franco1991
Tags: absorption, effects, instanteneous, lasting, produce, saturated
franco1991
franco1991 is offline
#1
Jan30-12, 06:45 PM
P: 20
In terms of saturated absorption of EM waves, is the following correct?:

The material only has so many atoms that can absorb photons, so if there are more photons that there are atoms, the atoms cannot absorb all the photons, and thus a certain percentage of the photons pass through.

OR alternatively is it that all the atoms becomes excited, and the time it takes to re-emit the photons increases, such that SUBSEQUENT application of photons results in less absorption.


Additional details:

If the first is correct, that there aren't enough atoms to absorb every photon, then could one not decrease the intensity of light required to reach saturated absorption in a material by decreasing the number of atoms (in the wave's path) rather than increasing the intensity of the EM wave?
Phys.Org News Partner Physics news on Phys.org
Better thermal-imaging lens from waste sulfur
Scientists observe quantum superconductor-metal transition and superconducting glass
New technique detects microscopic diabetes-related eye damage

Register to reply

Related Discussions
Can the effects of the higgs field be saturated? High Energy, Nuclear, Particle Physics 0
what is saturated absorption? Quantum Physics 1
Instanteneous velocity... Introductory Physics Homework 2
The lasting of the sense of vision Medical Sciences 2
Mixture of saturated liquid and saturated vapor Biology, Chemistry & Other Homework 3