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Proceedings Paper

Optical diagnostics of laser-induced melting and defect formation at the surface of cadmium telluride
Author(s): Leonid A. Golovan; Viktor Yu. Timoshenko
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Paper Abstract

Modifications of structural, electrical and recombinational properties of CdTe under nanosecond pulse of ruby laser were studied by techniques of second harmonic generation, time resolved reflectivity, photoreflectance and photoluminescence. The threshold energy density necessary for surface melting Wm equals 40 +/- 5 mJ/cm2 was determined. Changes in linear reflection coefficient indicate intensive evaporation of the components at W > 90 mJ/cm2. Laser induced defect formation was registered after treatment with W > Wm. Apart from defect formation, the process of their annealing was detected in narrow area of energy near the melting threshold.

Paper Details

Date Published: 10 June 1996
PDF: 8 pages
Proc. SPIE 2801, Nonlinear Optics of Low-Dimensional Structures and New Materials, (10 June 1996); doi: 10.1117/12.242139
Show Author Affiliations
Leonid A. Golovan, M.V. Lomonosov Moscow State Univ. (Russia)
Viktor Yu. Timoshenko, M.V. Lomonosov Moscow State Univ. (Russia)

Published in SPIE Proceedings Vol. 2801:
Nonlinear Optics of Low-Dimensional Structures and New Materials
Vladimir I. Emel'yanov; Vladislav Ya. Panchenko, Editor(s)

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