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Proceedings Paper

Photorefractive properties of doped and irradiated cadmium telluride crystals
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Paper Abstract

In this paper we propose a new method to control the spectroscopic and nonlinear-optical properties of photorefractive semiconductor CdTe crystals using the radiation defects caused by electrons and gamma-quanta irradiation. The photorefractive response is analyzed using the four-wave mixing pattern of laser pulses, one of which is delayed in time. It is found that both the irradiation and doping of cadmium telluride crystals with vanadium, titanium or ferrum leads to changes in the spectroscopic and nonlinear-optical properties of the crystals. Apart from relatively narrow bands appearing in the absorption spectra due to additional energy levels within the band gap, one can observe variations in the absorption factor over a wide spectral region. Recording of dynamic holograms is realized with no external electric field owing to pulsed laser radiation at a wavelength of 1.06 μm and diffraction efficiency of 1 - 2 %.

Paper Details

Date Published: 5 October 2005
PDF: 8 pages
Proc. SPIE 5949, Nonlinear Optics Applications, 59491R (5 October 2005); doi: 10.1117/12.622977
Show Author Affiliations
I. N. Agishev, Belarusian State Univ. (Belarus)
A. L. Tolstik, Belarusian State Univ. (Belarus)
O. K. Khasanov, Institute of Solid State and Semiconductor Physics (Belarus)

Published in SPIE Proceedings Vol. 5949:
Nonlinear Optics Applications
Miroslaw A. Karpierz; Allan Dawson Boardman; George I. Stegeman, Editor(s)

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