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Second-harmonic generation in the thermal/electrical poling (100−x)GeS2·x(0.5Ga2S3·0.5CdS) chalcogenide glasses |
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| Authors: | Shaoxuan Gu Zhijun Ma Changgui Lin Xiujian Zhao Yueqiu Gong |
| Institution: | a Key Laboratory of Silicate Materials Science and Engineering, Wuhan University of Technology, Ministry of Education, Luoshi Road 122, Hongshan District, Wuhan, Hubei 430070, PR China b School of Materials Science and Engineering, Wuhan University of Technology, Luoshi Road 122, Hongshan District, Wuhan, Hubei 430070, PR China c Key Laboratory of Low Dimensional Materials & Application Technology, Xiangtan University, Ministry of Education, Xiangtan, Hunan 4111005, PR China |
| Abstract: | Utilizing Maker fringe (MF) method, second-harmonic generation (SHG) has been observed within the GeS2-Ga2S3-CdS pseudo-ternary glasses through thermal/electrical poling technique. The SHG phenomenon was considered to be the result of breakage of the glassy macroscopic isotropy originated from the reorientations of dipoles during the thermal/electrical poling process. Under the same poling condition conducted with 5 kV and 280 °C for 30 min, the maximum value of second-order nonlinear susceptibility χ(2) of the poled (100−x)GeS2·x(0.5Ga2S3·0.5CdS) glasses was obtained to be ≈4.36 pm/V when the value of x is equal to 30. Nonlinear dependence of χ(2) on compositions of these glasses can be well explained according to the theory related to the reorientation of dipoles. |
| Keywords: | A Chalcogenides A Optical materials D Optical properties |
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