Influence of temperature gradients on spectral transmission of acousto-optic tunable filters based on KH<sub>2</sub>PO<sub>4</sub> crystal

Conference paper (2016)

Authors

T. V. Yukhnevich Chemistry Faculty of M. V. Lomonosov Moscow State University
Vitaly Borisovich Voloshinov Chemistry Faculty of M. V. Lomonosov Moscow State University
S. N. Mantsevich Chemistry Faculty of M. V. Lomonosov Moscow State University
Emmanuel Dekemper Royal Belgian Institute for Space Aeronomy (BIRA-IASB)
J. Vanhamel Royal Belgian Institute for Space Aeronomy (BIRA-IASB)
Bert Van Opstal Royal Belgian Institute for Space Aeronomy (BIRA-IASB)
Didier Fussen Royal Belgian Institute for Space Aeronomy (BIRA-IASB)
Affiliation
External organisation
Temperature variation KHPO crystal Spectral transmission Thermal shifts Tunable acousto-optic tunable filter
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Published Date

2016

Language

English

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Abstract

we examined acousto-optic interaction in the KH2PO4 crystal used in devices providing control of optical radiation parameters. The crystal was applied in a wide-angle tunable acousto-optic filter capable of image processing in the ultraviolet region of spectrum. The filter operated at different temperature conditions because of changes of environmental temperature and also due to heating of the crystal by driving electric and acoustic power. As found experimentally and proved theoretically, changes in the temperature of the instrument and appearance of thermal gradients in the crystal volume sufficiently influenced on operation characteristics of the acousto-optic device.