快速可切换电光径向偏振延迟器
Fast switchable electro-optic radial polarization retarder
摘要：
提出了一种利用电光陶瓷PMN-PT制作的快速可切换电光径向偏振延迟器（EO-RPR）。这种电光RPR可用于快速、可切换地产生纯柱面矢量光束。当与一对半波片一起使用时，EO-RPR可以将圆偏振光改变为感兴趣的任何圆柱形矢量光束，例如径向或方位角偏振光。实验上产生了纯度大于95%的径向和方位偏振光。使用EO-RPR的优点包括快速响应时间、低驱动电压和在宽光谱范围（500 - 7000 nm）内的透明性。
英文摘要：
A fast, switchable electro-optic radial polarization retarder (EO-RPR) fabricated using the electro-optic ceramic PMN-PT is presented. This EO-RPR is useful for fast, switchable generation of pure cylindrical vector beam. When used together with a pair of half-wave plates, the EO-RPR can change circularly polarized light into any cylindrical vector beam of interest such as radially or azimuthally polarized light. Radially and azimuthally polarized light with purities greater than 95% are generated experimentally. The advantages of using EO-RPR include fast response times, low driving voltage and transparency in a wide spectral range (500 -7000 nm).
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