Vol. 1, issue 08, article # 10

Abstract:

An example of a two-level atom gas interacting with a low-intensity wide light beam is considered to examine the effect of the light pressure force on the absorption coefficient. It is shown that, in the regions far from saturation the pressure force may cause an essentially nonequilibrium atomic velocity distribution. The latter results in an enhanced transmittance of the propagation medium, the absorption law being nonexponential.