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Examination of Temperature Influence on Wide-Angle Paratellurite Crystal Acousto-Optic Filters Operation

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Mantsevich S., Korablev O., Kalinnikov Y., Ivanov A., Kiselev A.
Acta Physica Polonica A
|
2015
|
vol. 127
|
issue 1
43-45
EN
The effect of temperature on a wide-angle paratellurite acousto-optic tunable filter is analyzed on the example of two different acousto-optic tunable filter configurations. The acousto-optic tunable filter operation was between -50°C to +40°C; also the survival of an acousto-optic tunable filter device at -130°C was demonstrated. The phase matching ultrasound frequency varies with temperature. We link this temperature shift to photoelastic characteristics of the TeO_{{2}}. A generalization is made for all wide-angle acousto-optic tunable filters based on TeO_{{2}} crystal. In addition, the temperature influence on the acoustic walk off angle was examined.
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