采用磁控溅射法制备了石榴石型偏振调节器并研究了温度对其的影响.利用斯托克斯偏振仪和CCD,研究激光透过石榴石及石榴石型偏振调节器的偏振极化性质和光斑变化.实验结果表明:在25~75℃温度范围内,激光穿过不同材料时,斯托克斯参量变化趋势不同;但是因方位角不改变,激光的偏振度、线偏振度、圆偏振度基本不变.
The influence of temperature on the garnet-type polarization modulation was investigated. The garnet-type polarization modulation was prepared by magnetron sputtering method, the polarization properties and optical spots of laserbeam through garent and garnet-type polarization modulation were examined by Stokes polarimeter and CCD. The experimental results show that the Stokes parameters of the laser beam passing through different materials present different trends, while the degree o{ polarization, degree of linear polarization and degree of circular polarization are nearly unchanged as the ellipticity angle does not change, when changing the temperature from 25 to 75℃.