Growth and Characterizations of ZnGeP₂ Crystal by a Vertical Bridgman Method

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• 作者：Yang Denghui ; Zhao Beijun ; ^{bjzhao@scu.edu.cn" class="auth_mail" title="E-mail the corresponding author} ; Zhu Shifu ; Chen Baojun ; He Zhiyu ; Cao Liqiang ; Chen Cheng ; Xie Hu
• 关键词：ZnGeP2 ; crystal growth ; X-ray diffraction ; IR transmittance ; ZGP optical parametric oscillator
• 刊名：Rare Metal Materials and Engineering
• 出版年：2015
• 出版时间：October 2015
• 年：2015
• 卷：44
• 期：10
• 页码：2368-2372
• 全文大小：744 K

文摘

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 ZnGeP₂ powder at 600 °C 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 kHz laser. All the results indicate that our grown crystal is in good quality and can be used for nonlinear optical applications.