Mytsyk Bohdan, Kryvyy Taras, Demyanyshyn Natalya, Mys Oksana, Martynyuk-Lototska Iryna, Kokhan Oleksandr, Vlokh Rostyslav
Appl Opt. 2018 May 10;57(14):3796-3801. doi: 10.1364/AO.57.003796.
Complete matrices of piezo-optic and elasto-optic tensors are experimentally determined for TlAsS crystals. It is revealed that the piezo-optic coefficients are very high, ∼10 N/m in the order of magnitude. This implies that TlAsS can be referred to the best piezo-optic materials. The same concerns the elasto-optic coefficients, of which absolute values are in the interval 0.28-0.54. It is also found that, at the anisotropic and isotropic interactions with the slowest transverse and longitudinal acoustic waves, the acousto-optic figure of merit reaches extremely high values (1.99×10 s/kg and 9.45×10 s/kg, respectively). In other words, the TlAsS crystals can be referred to as one of the best acousto-optic materials for the visible and infrared spectral ranges.
通过实验确定了TlAsS晶体的完整压光张量和弹光张量矩阵。结果表明，压光系数非常高，量级约为10 N/m。这意味着TlAsS可被视为最佳的压光材料之一。弹光系数也是如此，其绝对值在0.28 - 0.54之间。还发现，在与最慢的横向和纵向声波的各向异性和各向同性相互作用中，声光品质因数达到极高的值（分别为1.99×10 s/kg和9.45×10 s/kg）。换句话说，TlAsS晶体可被视为可见光和红外光谱范围中最佳的声光材料之一。
