Wu Dan, Li Yahong, Jia Wentao, Zhou Jianhong, Zhao Yu, Fu Yuegang, Wang Jiake
Appl Opt. 2019 Feb 20;58(6):1508-1513. doi: 10.1364/AO.58.001508.
A dual-modulation method that combines a liquid crystal on silicon spatial light modulator with an S-waveplate and a biplate consisting of double quarter-wave plates (DQWPs) or double half-wave plates (DHWPs) is proposed. The method is used to realize the phase and polarization dual modulation of an incident laser beam. This study focuses on the generation of an arbitrary vector vortex beam (VVB) based on the proposed dual-modulation method. The phase and polarization transformation effects of the proposed method are theoretically derived using the Stokes-Mueller matrix algorithm. Correspondingly, an experimental configuration is constructed to generate arbitrary VVBs, and correlation analyses are carried out to quantitatively evaluate the quality of the generated VVBs. The results indicate that the correlation coefficients of the generated VVBs can reach more than 0.94 whether the biplate in the experimental configuration is DQWP or DHWP.
提出了一种将硅基液晶空间光调制器与一个S波片以及由双四分之一波片（DQWP）或双半波片（DHWP）组成的双片相结合的双调制方法。该方法用于实现入射激光束的相位和偏振双调制。本研究重点基于所提出的双调制方法生成任意矢量涡旋光束（VVB）。使用斯托克斯 - 穆勒矩阵算法从理论上推导了所提方法的相位和偏振变换效应。相应地，构建了一个实验装置来生成任意VVB，并进行相关性分析以定量评估所生成VVB的质量。结果表明，无论实验装置中的双片是DQWP还是DHWP，所生成VVB的相关系数都能达到0.94以上。
