Photorefractivity of cadmium telluride crystals

O. K. Khasanov; O. M. Fedotova; V. I. Levchenko; N. F. Kurilovich; I. N. Agishev; A. L. Tolstik; A. E. Korolev; A. V. Koklyushkin

doi:10.1117/12.648208

6 December 2006 Photorefractivity of cadmium telluride crystals

O. K. Khasanov, O. M. Fedotova, V. I. Levchenko, N. F. Kurilovich, I. N. Agishev, A. L. Tolstik, A. E. Korolev, A. V. Koklyushkin

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Proceedings Volume 6023, Tenth International Conference on Nonlinear Optics of Liquid and Photorefractive Crystals; 60230N (2006) https://doi.org/10.1117/12.648208
Event: Tenth International Conference on Nonlinear Optics of Liquid and Photorefractive Crystals, 2005, Alushta, Ukraine

Abstract

This paper is devoted to growth and doping of semiconductor photorefractive cadmium telluride (CdTe) crystals as well as to the investigation into their spectroscopic and non-linear optical properties. The crystals are doped with vanadium, iron, and titanium. Two methods have been used for the production of doped crystals: diffused post-growth doping and growth of doped crystals from melt. Non-linear optical properties of the samples were studied at a wavelength of 1.06 μm for a four-wave mixing geometry and 1.54 μm for a two beam coupling. Maximum 2% diffraction efficiency at 1.06 μm was revealed with the convergence angle of light beams approximating 8" for the grating period of 7 μm. In this case the dynamic grating lifetime was found to be about 0.2 μs. Under beam coupling at ~ 1.5 μm, the conditions of maximum gain (0.7 cm^-1) were observed in the experiment for a minimum grating period of 1 μm; and the gain could be slightly enhanced by application of a dc electric field (~ 2 kV/cm) up to 40%.

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O. K. Khasanov, O. M. Fedotova, V. I. Levchenko, N. F. Kurilovich, I. N. Agishev, A. L. Tolstik, A. E. Korolev, and A. V. Koklyushkin "Photorefractivity of cadmium telluride crystals", Proc. SPIE 6023, Tenth International Conference on Nonlinear Optics of Liquid and Photorefractive Crystals, 60230N (6 December 2006); https://doi.org/10.1117/12.648208

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