Title

Nonlinear absorption and refraction in CuCl at 532 nm

Authors

Authors

A. A. Said; T. Xia; D. J. Hagan; E. W. VanStryland;M. SheikBahae

Comments

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Abbreviated Journal Title

J. Opt. Soc. Am. B-Opt. Phys.

Keywords

Z-SCAN MEASUREMENTS; 2-PHOTON ABSORPTION; ZINCBLENDE SEMICONDUCTORS; OPTICAL NONLINEARITIES; SINGLE-BEAM; ANISOTROPY; GAAS; CDTE; Optics

Abstract

We report two-photon absorption in CuCl and its polarization dependence to give all three chi((3)) tensor elements at 532 nm. We also report bound electronic n(2) and free-carrier refraction in CuCl. The values obtained are each approximately one half the corresponding values for ZnSe. Previously, with ZnSe, the large two-photon absorption(2PA) and negative bound-electronic nonlinear refraction were combined with defocusing from 2PA-generated free carriers to provide effective optical limiting for visible picosecond input pulses. For nanosecond pulses thermal refraction is a problem because it leads to self focusing, and thus damage in ZnSe and most other semiconductors studied. However, the thermal refraction in CuCl is reported to be self-defocusing. Thus one might expect the self-protection properties of CuCl to be better than those of ZnSe for optical-limiting applications for nanosecond input pulses. (C) 1997 Optical Society of America.

Journal Title

Journal of the Optical Society of America B-Optical Physics

Volume

14

Issue/Number

4

Publication Date

1-1-1997

Document Type

Article

Language

English

First Page

824

Last Page

828

WOS Identifier

WOS:A1997WU01700017

ISSN

0740-3224

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