矢量偏振光束产生新方法  

New Method of Generating Vectorial Polarized Beams

作　　者：黄妍[1] 叶红安[1] 高来勖[1] 张敏[1] 刘书钢[1] 

机构地区：[1]黑龙江大学黑龙江省普通高等学校电子工程重点实验室,黑龙江哈尔滨150080

出　　处：《中国激光》2012年第4期17-20,共4页Chinese Journal of Lasers

基　　金：黑龙江省教育委员会海外学人项目(1251HZ002);黑龙江省普通高等学校电子工程重点实验室项目(DZZD20100014)资助课题

摘　　要：为了解决现有矢量偏振光束(VPB)产生装置结构复杂、成本高等问题,提出了利用一种由多个线型偏振器件构成的同心圆环装置即显偏器(PAF)产生矢量偏振光束的新方法。基于显偏器的特殊结构特点,由LED光源输出的自然光束经显偏器,可产生角向偏振光束(APB),再经两个快轴成45°角的半波片可将角向偏振光束转换成径向偏振光束(RPB)。采用此方法获得的矢量偏振光束经线偏振片验证其光强分布情况,研究发现所得结果与已发表的实验结果相符,验证了该方法的有效性和实用性。In order to resolve the complicated structure and higher cost problems with current vectorial polarized beams（VPB） generating devices,a new method of generating vectorial polarized beams is proposed by using a ring device with many linear polarizer components concentric circles which is called polarization axis finder（PAF）.Based on the special structure property of PAF,nature light emitted by a light emitting diode（LED） encounters the PAF,and then the azimuthally polarized beam（APB） is formed.A polarization transformation of APB to radially polarized beam（RPB） is consisted of two half-wave plates with angle of 45° between the two fast axes.The intensity distributions with different polarizer directions for vectorial polarized beams are observed.The experimental results generally agree with the results previously reported,which can verify the validity and practicality of this method.

关 键 词：物理光学 矢量偏振光束 显偏器 角向偏振光束 径向偏振光束 

分 类 号：O436.3[机械工程—光学工程]