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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Vol. 8, Iss. 7 — Jul. 1, 1991
  • pp: 1531–1536

Laser-induced darkening in semiconductor-doped glasses

J. Malhotra, D. J. Hagan, and B. G. Potter  »View Author Affiliations


JOSA B, Vol. 8, Issue 7, pp. 1531-1536 (1991)
http://dx.doi.org/10.1364/JOSAB.8.001531


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Abstract

We have performed experiments to characterize permanent laser-induced darkening in CdSxSe1−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 μm. 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.

© 1991 Optical Society of America

History
Original Manuscript: June 8, 1990
Revised Manuscript: February 25, 1991
Published: July 1, 1991

Citation
J. Malhotra, D. J. Hagan, and B. G. Potter, "Laser-induced darkening in semiconductor-doped glasses," J. Opt. Soc. Am. B 8, 1531-1536 (1991)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-8-7-1531

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