Abstract
Real structure modification of CdTe single crystals exposed to pulsed radiation of ruby and Nd: YAG lasers is investigated using X-ray diffraction topography in the reflection configuration. The changes are mostly due to effects of heat in a thin surface layer. Depending on the incident laser energy, the following significant changes in the real structure of the crystal surface layer are observed: (1) integral improvement of the surface structure due to microstress relaxation; (2) the formation, development, and degradation of an ordered twin structure in the process of recrystallization; and (3) the formation of a fine-mesh dislocation structure. All these changes barely affect the bulk of the crystal. Mechanisms of the modifications are discussed, along with possibilities for their monitoring and control.
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Translated from Fizika Tverdogo Tela, Vol. 42, No. 3, 2000, pp. 548–552.
Original Russian Text Copyright © 2000 by Shul’pina, Zelenina, Matveev.
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Shul’pina, I.L., Zelenina, N.K. & Matveev, O.A. Heat effect of pulsed laser radiation on the real structure of CdTe single crystals. Phys. Solid State 42, 561–565 (2000). https://doi.org/10.1134/1.1131249
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DOI: https://doi.org/10.1134/1.1131249