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《Rare Metal Materials and Engineering》 2015-10
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Growth and Characterizations of ZnGeP_2 Crystal by a Vertical Bridgman Method

Yang Denghui;Zhao Beijun;Zhu Shifu;Chen Baojun;He Zhiyu;Cao Liqiang;Chen Cheng;Xie Hu;Sichuan University;  
ZnGeP2(ZGP) single crystal with size of 24 mm in diameter and 70 mm in length was grown by a modified vertical Bridgman(VB) method in a three-zone furnace. The crystal was annealed in Zn Ge P2 powder at 600 ℃ for 500 h. X-ray diffraction(XRD), X-ray fluorescence(XRF) and Fourier transform infrared spectrophotometry(FTIR) were employed to characterize its properties. A ZGP optical parametric oscillator(ZGP-OPO) device was fabricated from the annealed sample. Laser experiment was carried out on the device. Tunable mid-infrared laser in the range of 3~5 μm was realized on the ZGP-OPO pumped by 2.1 μm, 7 k Hz laser. All the results indicate that our grown crystal is in good quality and can be used for nonlinear optical applications.
【Fund】: National Natural Science Foundation Key Programs of China(50732005);; National High Technology Research and Development Program of China(2007AA03Z443)
【CateGory Index】: O78
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