Sum rules for the nonlinear susceptibilities in the case of sum frequency generation
- 15 March 1987
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 35 (8) , 4116-4117
- https://doi.org/10.1103/physrevb.35.4116
Abstract
Some sum rules are given for nonlinear susceptibilities in the case of sum frequency generation. The derivation is based on the classical model of the anharmonic oscillator and the theory of several complex variables is used.Keywords
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