Accession Number : AD0439435


Title :   NON-LINEAR INTERACTIONS OF ELECTROMAGNETIC FIELDS WITH MATTER,


Corporate Author : RAND CORP SANTA MONICA CALIF


Personal Author(s) : Yura,H T


Report Date : May 1964


Pagination or Media Count : 52


Abstract : This study is an introduction to non-linear interactions of the electromagnetic field with an isotropic, homogeneous medium. A quantum mechanical theory of two-photon propagation is presented, and an integral equation for the twophoton Greens function is derived. The classical non-linear macroscopic Maxwell equations, which take into account double-photon effects, are derived and the phenomenological parameters which appear in these equations are related to their corresponding quantum mechanical parameters. In particular, the non-linear polarizability and conductivity of an atomic system are derived. Numerical estimates of the non-linear terms are given and application of this theory to the absorption of laser light in an atomic medium is discussed. In particular, it is argued that in the case of a double resonance, the non-linear absorption rate can be larger than the linear absorption rate. (Author)


Descriptors :   *ELECTROMAGNETIC FIELDS , *LASERS , GASES , ABSORPTION , ATOMIC PROPERTIES , QUANTUM THEORY , PHOTONS , PROPAGATION , NONLINEAR SYSTEMS , GROUND STATE , RESONANCE , CONDUCTIVITY


Distribution Statement : APPROVED FOR PUBLIC RELEASE