Two-dimensional polarization encoding with a phase-only liquid-crystal spatial light modulator
Two-dimensional polarization encoding with a phase-only liquid-crystal spatial light modulator
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DOI：
10.1364/ao.39.001549
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发表时间：
2000-04-01
期刊：
影响因子：
1.9
通讯作者：
Sonehara, T
中科院分区：
文献类型：
--
作者：
Davis, JA;McNamara, DE;Sonehara, T
我们展示了如何使用平行排列液晶空间光调制器（LCSLM）对入射光束的偏振态进行二维编码。LCSLM的每个像素充当压控波片，并且可以在514.5 nm的波长下在2 π相位范围内进行编程。综述了旋转椭圆偏振光主轴或将线偏振光转换成任意椭圆偏振光的技术。实验结果表明，我们产生各种二维空间图案的偏振光。几个潜在的应用提出了建议。我们还报告了一个意想不到的边缘增强效果，可能是有用的图像处理应用程序。(C)2000年美国光学学会。
We show how to two dimensionally encode the polarization state of an incident light beam using a parallel-aligned liquid-crystal spatial light modulator (LCSLM). Each pixel of the LCSLM acts as a voltage-controlled wave plate and can be programmed over a 2 pi phase range at a wavelength of 514.5 nm. Techniques are reviewed for either rotating the major axis of elliptically polarized Light or for converting an input Linearly polarized beam into an arbitrary elliptically polarized beam. Experimental results are demonstrated in which we generate various two-dimensional spatial patterns of polarized light. Several potential applications are suggested. We also report an unexpected edge-enhancement effect that might be useful in image processing applications. (C) 2000 Optical Society of America.