Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1758721 | Ultrasonics | 2015 | 9 Pages |
Abstract
The effect of temperature on the performance in a wide-angle paratellurite acousto-optic tunable filter (AOTF) is analyzed on the example of two different AOTF configurations. The present study is a by-product of the AOTF characterization for space-borne applications. The two AOTFs serve as dispersion elements in spectrometers for Moon and Mars space missions. The operation of the AO filters was tested in the range of â50° to +40 °C; we have also demonstrated the survival of an AOTF device at â130 °C. The phase matching ultrasound frequency varies with temperature within 2.5 Ã 10â5 Kâ1 and 6.6 Ã 10â5 Kâ1. We link this temperature shift to elastic characteristics of the TeO2, and demonstrate that it is mostly explained by the temperature modification of the slow acoustic wave velocity. We point out the best reference describing experimental results (Silvestrova et al., 1987). A generalization is made for all wide-angle acousto-optic tunable filters based on tellurium dioxide crystal.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Acoustics and Ultrasonics
Authors
S.N. Mantsevich, O.I. Korablev, Yu.K. Kalinnikov, A.Yu. Ivanov, A.V. Kiselev,