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Possible application of LiNbO3 single crystals as temperature indicators based on the temperature dependencies of the birefringence

The problem of new methods of temperature measurements has become vital recently. One of the trends in the search of non-contact methods of temperature measurement is based on changes of optical characteristics caused by temperature changes. One of these methods is the interference-optical method based on recording of the changing interference pattern caused by the light transmission through the anisotropic crystal when temperature is changed.