Title

Laser-Induced Darkening In Semiconductor-Doped Glasses

Title - Alternative

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

Abstract

We have performed experiments to characterize permanent laser-induced darkening in CdS(x)Se1-x semiconductor-doped glasses with picosecond pulses as a function of fluence, repetition rate, and pulse width. We find that the darkening occurs by means of a nonlinear process that exhibits an anomalous dependence on pulse width. Transmission spectra show that the induced darkening is uniform over the spectral range from the absorption edge out to 820-mu-m. Darkening in a number of different glasses is compared. On the basis of our results we propose a mechanism that involves photoassisted trapping of electrons from the semiconductor microcrystallites into states within the glass host material.

Publication Title

Journal of the Optical Society of America B-Optical Physics

Volume

8

Issue/Number

7

Publication Date

1-1-1991

Document Type

Article

Language

English

First Page

1531

Last Page

1536

WOS Identifier

WOS:A1991FV32300024

ISSN

0740-3224

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