线偏振光通过多个任意厚度波片的偏振态  

Polarization states of linearly polarized light transmitting through several wave-plates with arbitrary thickness

作　　者：任树锋[1] 王秀霞[1] 

机构地区：[1]菏泽学院物理系,菏泽274015

出　　处：《激光技术》2014年第3期394-397,共4页Laser Technology

基　　金：山东省高等学校科技计划资助项目(J11LA52);荷泽学院自然科学基金资助项目(XY13KJ04)

摘　　要：为了研究线偏振光通过多个任意厚度波片后的偏振态,利用线偏振光叠加的方法,对两个晶体光轴夹角为45°的不同厚度波片计算了透射的两个正交线偏振光的强度和相位差,由此得到叠加后的偏振态及透射光总强度,并分析了它们随波片延迟量、入射光方位角的变化关系。结果表明,透射光的偏振态由后面波片的延迟量决定,强度由前面波片的延迟量和入射线偏振光方位角决定,同时说明正反向使用时,透射光的偏振态和强度一般不同。该研究结果可用于类似结构退偏器(如Lyot退偏器)的分析。Adopting the means of light vector superimposition , the polarization states of linearly polarized light transmitting through several wave-plates with arbitrary thickness were analyzed .Taking two wave plates whose optical axes are oriented at 45°as example, the polarization states and intensity of transmitted light were calculated .It is found that the polarization states are dependent on retardation of the back wave-plate, and the intensity is dependent on retardation of the front wave-plate and vibration azimuth angle of incident light .It also indicates that the characteristics are not the same when the two wave plates are used in forward and reverse directions .The theoretical results can be applied to the analysis of depolarizer , such as Lyot depolarizer .

关 键 词：光学器件 波片 偏振态 相位差 线偏振光 

分 类 号：O436.3[机械工程—光学工程]