中文摘要：

采用高折射率的SiC晶体材料,作为布氏片的选频器件,实现了单纵模绿光激光器的稳定工作,输出功率达120 mW。通过理论分析和实验证明,相较于现有的采用K9玻璃,采用高折射率的SiC晶体作为选频器件,使整个光学系统更容易调节，且器件工作更加稳定，更易实现商品化。

英文摘要：

SiC crystals are used for a high refractive index material, as the frequency-selected device of Brewster plate. A stable single- longitudinal- mode green laser with an output power of 120 m W is achieved. Both the theoretical analysis and experimental results show that, compared with the common frequency-selected device using K9 glass as Brewster plate, the new frequency-selected device using the high refractive crystal of SiC as Brewster plate makes it easier to adjust the entire optical system. Moreover, the device works more stably, be much easier to achieve commercialization.