Mytsyk Bogdan, Demyanyshyn Natalya, Erba Alessandro, Shut Viktor, Mozzharov Sergey, Kost Yaroslav, Mys Oksana, Vlokh Rostyslav
Appl Opt. 2017 Dec 1;56(34):9484-9490. doi: 10.1364/AO.56.009484.
For the first time, to the best of our knowledge, we have experimentally determined all of the components of the piezo-optic tensor for monoclinic crystals. This has been implemented on a specific example of triglycine sulfate crystals. Based on the results obtained, the complete elasto-optic tensor has been calculated. Acousto-optic figures of merit (AOFMs) have been estimated for the case of acousto-optic interaction occurring in the principal planes of the optical indicatrix ellipsoid and for geometries in which the highest elasto-optic coefficients are involved as effective parameters. It has been found that the highest AOFM value is equal to 6.8×10 s/kg for the case of isotropic acousto-optic interaction with quasi-longitudinal acoustic waves in the principal planes. This AOFM is higher than the corresponding values typical for canonic acousto-optic materials, which are transparent in the deep ultraviolet spectral range.
据我们所知，我们首次通过实验确定了单斜晶体的压光张量的所有分量。这是在硫酸三甘肽晶体的一个具体实例上实现的。根据所得结果，计算出了完整的弹光张量。针对在光学指示椭球主平面中发生的声光相互作用情况以及涉及最高弹光系数作为有效参数的几何结构，估算了声光优值（AOFMs）。已经发现，对于在主平面中与准纵向声波的各向同性声光相互作用情况，最高的AOFM值等于6.8×10 s/kg。该AOFM高于典型的经典声光材料在深紫外光谱范围内透明时的相应值。
