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Optica Publishing Group
  • Quantum Electronics and Laser Science Conference
  • OSA Technical Digest (Optica Publishing Group, 1992),
  • paper QThD9

Nondegenerate two-photon absorption spectra of ZnS, ZnO, and ZnSe

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Abstract

Single-wavelength measurements of the two-photon absorption coefficient of large-gap semiconductors have been widely reported.1 It has been shown recently that a knowledge of β(ω1, ω2) at all frequencies ω2 enables one to calculate, by means of a Kramers-Kronig transformation, the bound-electronic nonlinear index of refraction n21)2. Additionally, a scaling rule for the nondegeiterate two-photon absorption coefficient was derived in by Sheik-Bahae et al.2 which implies that all semiconductors will behave similarly under subresonant excitation. Hero, we report a broad-band investigation of the two-photon absorption spectrum of three II-VI semiconductors and comparison of the results with theory.

© 1992 Optical Society of America

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