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Temperature Dependence of Photorefractive Response of Sn2P2S6

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The photorefractive response in Sn2P2S6 (SPS) is studied as a function of temperature with two-beam coupling experiments. The temperature dependences of the diffusion field and the electrooptic coefficient are the main reasons for the considerable decrease of the gain factor when cooling the sample from ambient temperature down to 150 K. At temperatures below 150 K, light-induced absorption gratings appear that are responsible for beam coupling, and the sign of the gain factor is dependent on the wavelength of the recording light.
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Keywords: DYNAMIC HOLOGRAPHY; LOW TEMPERATURE; PHOTOREFRACTIVE GRATINGS

Document Type: Research Article

Publication date: December 1, 2009

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  • The growing interest and activity in the fields of holography and speckle require a forum for rapid dissemination of important results. Journal of Holography and Speckle (JOHAS) is that international forum which offers scientists and engineers timely, peer-reviewed research in these fields. Journal of Holography and Speckle publishes original rapid communications, full research papers and timely state-of-the-art reviews (with author's biography and photo) encompassing the fundamental and applied research in all areas of holography, and speckle.
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