Abstract

This paper presents an express technique for determining the diffusion coefficients of chromium in ZnSe, using a Tm:YLF laser that emits at 1.908 ?m. The diffusion coefficients of chromium in ZnSe obtained by deposition from the vapor phase are determined to be D=(9.5±0.6)×10<sup>?9</sup>??cm<sup>2</sup>/s and D=(1.0±0.1)×10<sup>?9</sup>??cm<sup>2</sup>/s at 1100°C and 900°C, respectively. The absorption cross section of Cr<sup>2+</sup> ions in zinc selenide at 1.908 ?m was 4.6×10<sup>?19</sup>??cm<sup>2</sup>.

© 2013 Optical Society of America

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