11 May 1993 Enhanced third-order nonlinear optical responses from optically pumped electronic excited states
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Proceedings Volume 1979, 1992 International Conference on Lasers and Optoelectronics; (1993) https://doi.org/10.1117/12.144183
Event: 1992 International Conference on Lasers and Optoelectronics, 1992, Bejing, China
Abstract
In this paper, we review the microscopic description for nonlinear optical processes originating from populated electronic excited states and examine an enhancement mechanism for third order optical processes. For a general case, we consider the third order (formula available in paper) excited state susceptibilities for linear chains that have been previously well-studied for their ground state nonlinear optical properties. We see that for a given frequency, enhancement can occur in the excited state (formula available in paper) and the origin and mechanism of the enhancement can be directly understood in terms of new virtual excitation processes. In section III, we summarize a recently completed experimental study of enhanced excited state third harmonic generation in conjugated structures.
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Yongming Cai, Qihou L. Zhou, Rui-Fang Shi, M. H. Wu, D. C. Rodenberger, Anthony F. Garito, "Enhanced third-order nonlinear optical responses from optically pumped electronic excited states", Proc. SPIE 1979, 1992 International Conference on Lasers and Optoelectronics, (11 May 1993); doi: 10.1117/12.144183; https://doi.org/10.1117/12.144183
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