CONSERVATION OF ANGULAR MOMENTUM FOR OPTICAL PROCESSES IN CRYSTALS.
HARVARD UNIV CAMBRIDGE MASS DIV OF ENGINEERING AND APPLIED PHYSICS
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The redistribution of angular momentum over atomic spin and orbitals, crystalline lattice and electromagnetic field is analyzed for a variety of linear and nonlinear optical processes in crystals. Simple classical and quantummechanical models are discussed. Special attention is paid to the magnetization of a body by light in the inverse Faraday effect and the generation of circularly polarized optical harmonics by laser light which is polarized in the opposite sense. Author