Measurement of free-carrier nonlinearities in ZnSe based on the Z-scan technique with a nanosecond laser

Kyu Haeng Lee, Wook Rae Cho, Jung Ho Park, Jong Sup Kim, Seung Han Park, Ung Kim

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

Self-defocusing and nonlinear absorption resulting from two-photon-excited free charge carriers were observed in polycrystalline ZnSe at the low power density of ~ 30 MW/cm2 by use of the Z-scan technique with nanosecond laser pulses. The total carrier absorption cross section and the variation of refractive index per unit of photoexcited carrier density were estimated to be 0.80 ± 0.10 × 10−18 cm2 and 0.60 ± 0.15 × 10−21 cm3, respectively.

Original languageEnglish
Pages (from-to)1116-1118
Number of pages3
JournalOptics Letters
Volume19
Issue number15
DOIs
Publication statusPublished - 1994 Aug

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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