Electronic self-defocusing of nanosecond laser pulses in bulk ZnSe

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

Research output: Contribution to journalArticle

Abstract

A large refractive nonlinearity (-2×10-20 cm3) has been observed in polycrystalline ZnSe across a range of wavelengths just below the band edge, using nanosecond laser pulses. The transmitted spatial profiles are measured, and theoretical fits give the spectral response of the nonlinear refractive cross section at low irradiances. A comparison with band filling theory indicates that the dynamic Burstein-Moss shift is the dominant mechanism responsible for this refractive nonlinearity.

Original languageEnglish
Pages (from-to)7351-7353
Number of pages3
JournalJournal of Applied Physics
Volume69
Issue number10
DOIs
Publication statusPublished - 1991

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