具有向列型空间光调制器的方位角偏振光和径向偏振光。

Azimuthally and radially polarized light with a nematic SLM.

作者信息

Bashkansky Mark, Park Doewon, Fatemi Fredrik K

机构信息

Optical Sciences Division, Naval Research Laboratory, Washington, D.C. 20375, USA.

出版信息

Opt Express. 2010 Jan 4;18(1):212-7. doi: 10.1364/OE.18.000212.

DOI:10.1364/OE.18.000212

PMID:20173841

Abstract

We demonstrate a technique for generating azimuthally and radially polarized beams using a nematic liquid crystal spatial light modulator and a pi phase step. The technique is similar in concept to prior techniques that interfere TEM(01) and TEM(10) laser modes, but the presented technique removes the requirement of interferometric stability. We calculate an overlap integral of >0.96 with >70% efficiency from an input Gaussian mode. The technique can easily switch between beams with azimuthal and radial polarization.

摘要

我们展示了一种使用向列型液晶空间光调制器和π相位步长来产生方位角偏振光束和径向偏振光束的技术。该技术在概念上与之前干涉TEM(01)和TEM(10)激光模式的技术相似，但本文提出的技术消除了干涉稳定性的要求。我们从输入高斯模式计算出重叠积分大于0.96且效率大于70%。该技术可以轻松地在方位角偏振光束和径向偏振光束之间切换。