偏振显示及椭圆偏振光测量实验

以单束正交线偏振光为光源,利用角向偏振显示器,采用CCD摄像机进行图像采集,利用Matlab软件进行图像处理,设计了一种由He-Ne激光器、角向偏振显示器组成的偏振光偏振方向显示系统,并研究了其角度特性.实验结果表明:系统在起偏器的起偏角分别为0°、90°、180°、270°、360°时,角向偏振显示器偏振显示角度的测量准确度分别为0.480°、0.168°、0.528°、0.421°、0.340°,测量精确度分别为0.208°、0.576°、0.660°、0.603°、0.466°,测量数据拟合曲线的线性相关系数为0.999.结合1/4波片,检偏器和分光比为50:50的分束器,构建了椭圆偏振光测量系统,完成了椭圆偏振光测量实验,椭圆率为0.198.

Polarization Display and Measurement Experiment of Elliptically Polarized Beam

Using a pair of orthogonally linearly polarized beams as the light source,the azimuthally polarization axis finder,CCD cameras as image collector and Matlab software to process images,a polarization direction display system for polarized light was presented,which consisted of a He-Ne laser and an azimuthally polarization axis finder.The angle characteristics of this system were researched.The results show that the measurement accuracy is 0.480°,0.168°,0.528°,0.421°and 0.340°,the measurement precision is 0.208°,0.576°,0.660°,0.603° and 0.466° in the case that the polarizing angle of polarizer is 0°,90°,180°,270° and 360°,respectively.By fitting a straight line to the experimental data,the linear correlation coefficient is 0.999 for this system.The elliptical polarization measurement system is constructed with a quarter-wave plate,analyzer and beam splitter with 50:50 splitting ratio.The measurement experiment of elliptically polarized light is completed,and the ellipticity of the elliptic curve is 0.198.