| 带有补偿器的液晶相位可变延迟器 |
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| 引用本文： | 张颖,赵海博. 带有补偿器的液晶相位可变延迟器[J]. 光学精密工程, 2009, 17(8) |
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| 作者姓名： | 张颖 赵海博 |
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| 作者单位： | 北京航空航天大学,仪器科学与光电工程学院精密光机电一体化技术教育部重点实验室,北京,100191;北京航空航天大学,仪器科学与光电工程学院精密光机电一体化技术教育部重点实验室,北京,100191 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 为了能够测量带有补偿器的液晶相位可变延迟器(LCVR)在不同电压值下的相位延迟,提出了一种基于斯托克斯矢量和穆勒矩阵的测量方法.在可见光范围内6个波长下实验测量了LCVR在2 kHz方波、0～10 V电压下的相位延迟.结果表明,LCVR具有调谐电压低、控制简单、调节范围大、无需转动等优点,相位延迟的测量误差＜0.6%.根据延迟器件的特性,建立了相位延迟的拟合函数公式,采用最小二乘曲线拟合的方法得到了延迟器件工作范围内全部波长、全部电压值下的相位延迟,曲线拟合的标准差＜0.02λ.提出的测量方法、测量结果和拟合函数的建立对偏光器件的研究有一定的参考价值.
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| 关 键 词： | 液晶相位可变延迟器 补偿器 斯托克斯矢量 穆勒矩阵 曲线拟合 |
Liquid crystal variable retarder attached with compensator |
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| ZHANG Ying,ZHAO Hai-bo. Liquid crystal variable retarder attached with compensator[J]. Optics and Precision Engineering, 2009, 17(8) |
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| Authors: | ZHANG Ying ZHAO Hai-bo |
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| Affiliation: | ZHANG Ying,ZHAO Hai-bo (Key Laboratory of Precision Opto Mechtronics Technology,Ministry of Education,School of Instrumentation Science & Opto electronics Engineering,Beihang University,Beijing,100191,China) |
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| Abstract: | A new method is presented based on a Stokes vector and a Mueller matrix to measure the retardation of a Liquid Crystal Variable Retarder (LCVR) attached with a compensator,a 2 kHz square wave with the adjustable amplitudes 0~10 V is used to control the LCVR and the retardation is measured at six wavelengths in a visible region. The experimental results show that the LCVR has the advantages of low voltage controlling,simple operation,wide adjustment ranges and no mechanical rotating,and the error of measurem... |
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| Keywords: | liquid crystal variable retarder compensator Stokes vector Mueller matrix curve fitting |
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