NOVEL PHOTOINDUCED EFFECTS IN CHALCOGENIDE GLASSES
NOVEL PHOTOINDUCED EFFECTS IN CHALCOGENIDE GLASSES
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DOI：
10.1016/0022-3093(91)90440-h
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发表时间：
1991-10-01
影响因子：
3.5
通讯作者：
TIKHOMIROV, VK
中科院分区：
文献类型：
--
作者：
LYUBIN, VM;TIKHOMIROV, VK
新现象：在低于带隙的偏振光作用下，As_2S_3硫系玻璃中发现了大的光致各向异性，但没有任何光暗化、光致回转性（圆二色性和双折射）和伴随退偏振的光致光散射。在As_（34）S_（52）I_（14）玻璃中观察到这些现象的最大值。这些效应的光学和热可逆性已经建立和研究。光诱导现象是由于光与弱化学键的相互作用导致各向异性和回转散射体的产生或重新取向。
Novel phenomena: large photo-induced anisotropy without any photo-darkening, photo-induced gyrotropy (circular dichroism and birefringence) and photo-induced light scattering accompanied by depolarization have been discovered in As2S3 chalcogenide glass on exposure to below-band-gap polarized light. Maxima for all these phenomena are observed in As34S52I14 glass. Optical and thermal reversibility of these effects has been established and studied. The photo-induced phenomena are attributed to interaction of light with weak chemical bonds leading to creation or re-orientation of anisotropic and gyrotropic scatterers.