| 液晶相位可变延迟器对光偏振态的调制 |
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| 引用本文： | 丁海兵,庞文宁,刘义保,尚仁成.液晶相位可变延迟器对光偏振态的调制[J].光子学报,2006,35(9):1397-1400. |
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| 作者姓名： | 丁海兵 庞文宁 刘义保 尚仁成 |
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| 作者单位： | 清华大学物理系,北京,100084 |
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| 基金项目： | 国家自然科学重点基金(10134010)资助 |
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| 摘 要： | 利用液晶相位可变延迟器（liquid crystal variable retarder, LCVR）的延迟相位随着其驱动电压连续可调特性，实现光偏振态的可控调制.设计了旋转检偏器，对LCVR进行820nm激光波长的现场校准，获得1/4λ、3/4λ和1/2λ、1λ相位延迟所对应的驱动电压，计算机控制其驱动电压实现对光偏振态的调制，并进行了检验，给出了理论分析和实验结果.该方法具有对光子入射方向不敏感、无需机械转动、适用较宽波长范围、实时可控等优点.
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| 关 键 词： | 物理光学 液晶相位可变延迟器 相位延迟 偏振态 |
| 收稿时间： | 2005-06-25 |
| 修稿时间： | 2005年6月25日 |
Photon Polarization Modulation with Liquid Crystal Variable Retarder |
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| Ding Haibing,Pang Wenning,Liu Yibao,Shang Rencheng.Photon Polarization Modulation with Liquid Crystal Variable Retarder[J].Acta Photonica Sinica,2006,35(9):1397-1400. |
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| Authors: | Ding Haibing Pang Wenning Liu Yibao Shang Rencheng |
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| Institution: | Department of Physics, Tsinghua University, Beijing 100084 |
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| Abstract: | The modulation of photon polarization by liquid crystal variable retarder (LCVR) whose phase retardation can be controlled easily by its driving voltage is described. A spinning polarimeter is designed to calibrate the LCVR for 820nm wavelength in situ. The driving voltages corresponding to 1/4λ,3/4λ,1/ 2λ and 1λ of LCVR are obtained,and the polarization of photon is modulated by changing the driving voltage via a computer. The theoretical analysis and experimental result are presented. The advantages of the proposed method are insensitivity to the incident photon direction,large wavelength range without mechanical movement,and real-time control. |
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| Keywords: | Physical optics Liquid crystal variable retarder Phase retardation Polarization |
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