26 October 1989 Advances In The Growth Of Tl3AsSe3 Crystal: A High-Efficiency Acousto-Optic And Opto-Electronic Material
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Abstract
Large optical-quality T13AsSe3 (TAS) single crystals were grown by the vertical Bridgman-Stockbarger method. Optical quality of the TAS boules was observed to depend on the purity of source materials and thermal gradient applied at the solidifying interface. Crystal quality was verified by etchpit studies and optical evaluation. Several TAS crystals were fabricated into a collinear acousto-optic tunable filter (AOTF) for use as an all-electronic intracavity laser-tuning element. Electronic tuning was demonstrated with a pulsed CO2 laser on both the P and R branches of the (001)-(100) CO2 band. Observed tuning properties, including exact RF drive frequency, matched modelling predictions. With some modification, such collinear AOTFs can tune over the entire 9-11 μm range by selection of RF drive frequency. Random access of any wavelength in the 9-11 μm range is possible at rates up to 50 kHz.
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N. B. Singh, N. B. Singh, L. J. Denes, L. J. Denes, M. Gottlieb, M. Gottlieb, R. Mazelsky, R. Mazelsky, } "Advances In The Growth Of Tl3AsSe3 Crystal: A High-Efficiency Acousto-Optic And Opto-Electronic Material", Proc. SPIE 1118, Space Optical Materials and Space Qualification of Optics, (26 October 1989); doi: 10.1117/12.960945; https://doi.org/10.1117/12.960945
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