硫镓银晶体的定向切割

Directional Cutting of AgGaS_2 Crystals

研究了一种准确、简捷定向切割硫镓银(AgGaS2)晶体的新方法。利用晶体结构特点,从AgGaS2晶体上解理出两个不平行的{101}晶面,结合其晶面间夹角关系和标准极图,确定出晶体的C轴方向。然后,以C轴为基准,按相位匹配角度对晶体进行切割,得到器件的通光面。再对切割出的器件初样进行加工和采用X射线衍射修正,获得了10 mm×10 mm×20 mm的AgGaS2晶体光参量振荡(OPO)器件。新方法对AgGaS2晶体进行定向切割加工,精度高、操作简便、重复性好,不仅可用于AgGaS2晶体的定向切割,而且可用于其它一些具有类似结构晶体的定向切割。

A convenient and accurate directional cutting new method on the AgGaS2 crystal was studied.Based on structure properties of the crystal,two unparallel {101} faces were cleaved out from the AgGaS2 crystal,the direction of the C axis on the crystal was determined by standard pole figure of AgGaS2.Then as standard direction by the C axis,light pass surface of device was got according to phase matching angle degree.AgGaS2 crystal optical parametric oscillator（OPO） device with size of 10 mm×10 mm×20 mm was obtained through further processing and calibrating by X-ray diffraction on the cutting sample.Above mentioned new method has merits of high accuracy,convenient operation and good repeatability on the AgGaS2 crystal in directional cutting and processing.The method not only can be used for directional cutting and processing of AgGaS2 crystal,but also can be used in directional cutting and processing of other crystals with similar structure.