Temporal pump depletion and self-defocusing of electronic origin in ZnSe at room temperature

W. Ji, J. R. Milward, A. K. Kar, B. S. Wherrett, C. R. Pidgeon

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Observations of temporal and spatial nonlinear effects in polycrystalline ZnSe at room temperature with nanosecond laser pulses near the bandgap are reported. Temporarily and spatially resolved transmission were measured. Typical results for the temporal pump depletion and for self-focusing for a polycrystalline ZnSe sample of 212-µm thickness at a wavelength of 470 nm are shown and discussed. The phenomenological theories have been extended to include the carrier recombination mechanism in order to simulate experimental results. By fitting the theories to the experiment, the nonlinear refractive index cross section (i.e., the nonlinear refractive index change per pair of photogenerated carriers) and the carrier recombination time were obtained.

Original languageEnglish
Title of host publicationCONFERENCE ON LASERS AND ELECTRO-0PTICS
Pages284-286
Number of pages3
Publication statusPublished - 1989
EventConference on Lasers and Electro-Optics 1989 - Baltimore, MD, United States
Duration: 24 Apr 198928 Apr 1989

Conference

ConferenceConference on Lasers and Electro-Optics 1989
CountryUnited States
CityBaltimore, MD
Period24/04/8928/04/89

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    Ji, W., Milward, J. R., Kar, A. K., Wherrett, B. S., & Pidgeon, C. R. (1989). Temporal pump depletion and self-defocusing of electronic origin in ZnSe at room temperature. In CONFERENCE ON LASERS AND ELECTRO-0PTICS (pp. 284-286)