Chemical etching orientation of ZnGeP2 single crystals

✍ Scribed by Jiang Cheng; Shifu Zhu; Beijun Zhao; Baojun Chen; Zhiyu He; Qiang Fan; Ting Xu

• Publisher: Elsevier Science
• Year: 2011
• Tongue: English
• Weight: 946 KB
• Volume: 318
• Category: Article
• ISSN: 0022-0248
• DOI: 10.1016/j.jcrysgro.2010.11.008

✦ Synopsis

A chemical etching orientation method is suggested for the ZnGeP 2 crystals. Several polished faces of ZnGeP 2 crystals were etched in a certain etching solution. Some regular etch pits appeared on all samples. The indices of side facets of the etch pits were measured by X-ray rocking method, which mainly belong to {2 0 4}, {1 1 2} and {1 1 0}. Then the three crystallographic axes of the crystals were determined according to the angle relationship. Finally, optical parametric oscillator (OPO) devices were cut at the direction of y¼01 and j¼531.