Title

Nonlinear absorption and refraction in CuCl at 532 nm

Abstract

We report two-photon absorption in CuCl and its polarization dependence to give all three χ(3) tensor elements at 532 nm We also report bound electronic n2 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. © 1997 Optical Society of America.

Publication Date

1-1-1997

Publication Title

Journal of the Optical Society of America B: Optical Physics

Volume

14

Issue

4

Number of Pages

824-828

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1364/JOSAB.14.000824

Socpus ID

0012095954 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/0012095954

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