The enhancement of /spl chi//sup (3)/(-/spl omega/;/spl omega/,-/spl omega/,/spl omega/) and switching rate has been confirmed under resonant pumping of coherent excitons. We propose theoretically the following nonlinear optical responses of the exciton: (1) Superradiance of Frenkel excitons and excitonic n-strings; (2) Frenkel and Wannier excitons show different characteristics of the third-order optical responses /spl chi//sup (3)/(-/spl omega/;/spl omega/,-/spl omega/,/spl omega/); (3) Generation of phase-conjugated wave shows singular spectrum near mobility edge of the exciton in a bulk crystal.<>
Excitonic nonlinear optical responses
Proceedings of LEOS '93 ; 110-111
1993-01-01
148978 byte
Conference paper
Electronic Resource
English
Excitonic Nonlinear Optical Responses
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