FREE ATOM IN STRONG AMPLITUDE-MODULATED LIGHT

The population and phase relaxation in TLS induced by resonant radiati on with stochastic amplitude was studied within the framework of sudde n modulation theory. Kinetics and stationary light absorption as well as resonance fluorescence were calculated for light with complex and r eal amplitude. Although the latter is a very popular model of the form er, it was shown to be inappropriate at strong interaction. The real ( Rayleigh) light has complex amplitude random in magnitude and phase an d changing in time as a Markovian chain, correlated or non-correlated. With respect to atom response to light of medium power, the analytica lly studied non-correlated field was shown to be similar to strongly c orrelated, ''stochastic'' field opened to only numerical inspection.