Acousto-Optic Properties of Chalcogenide Compounds

A group of infrared materials, the chalcogenide crystals, (T13AsSe3,T13AsS3, etc.) have shown great promise for acousticoptic device applications in the infrared due to their unusual high figure of merit. Only a limited number of elasto-optic coefficients has been reported in the literature. This paper reports further measurements of elastic and elasto-optic coefficients of these materials. We have designed and built several acousto-optic devices using T1 AsSe crystals. The design and test resul%s