Birefringence measurement of liquid crystals based on laser feedback effect

Li Jiyang; Tan Yidong; Wu Ji; Zhang Shulian

doi:10.3788/IRLA201746.0306003

Volume 46 Issue 3

Apr. 2017

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Li Jiyang, Tan Yidong, Wu Ji, Zhang Shulian. Birefringence measurement of liquid crystals based on laser feedback effect[J]. Infrared and Laser Engineering, 2017, 46(3): 306003-0306003(6). doi: 10.3788/IRLA201746.0306003

Citation:

Li Jiyang, Tan Yidong, Wu Ji, Zhang Shulian. Birefringence measurement of liquid crystals based on laser feedback effect[J]. Infrared and Laser Engineering, 2017, 46(3): 306003-0306003(6). doi: 10.3788/IRLA201746.0306003

Birefringence measurement of liquid crystals based on laser feedback effect

doi: 10.3788/IRLA201746.0306003

1.
State Key Laboratory of Precision Measurement Technology and Instruments,Department of Precision Instrument,Tsinghua University,Beijing 100084,China;
2.
School of Instrumentation Science and Opto-electronics Engineering,Beihang University,Beijing 100191,China;
3.
Castech Inc.,Fuzhou 350003,China

Received Date: 2016-07-11
Rev Recd Date: 2016-08-12
Publish Date: 2017-03-25

Abstract

The precise measurement of the birefringence in the liquid crystals has significant meaning for practical applications. The working principles of the liquid crystals were analyzed. The laser anisotropy external cavity feedback system was built based on the laser feedback effect. The anisotropy of the liquid crystals under different voltages was measured. The measurement results show that the accuracy of the laser anisotropy external cavity feedback system is within 0.3°; By imposing different voltage from 0 to 24 V, the birefringence changes from 2.74×10-1 to 2.39×10-3, corresponding to the large range phase retardation of 460° to 5°. With the voltage in the range of 0.7 V to 2 V, the relationship between the voltage and the birefringence is linear and its linearity is better than 95.5%. The liquid crystals can provide stable phase retardation, the short-term repeatability is better than 0.52° and the long-term repeatability is better than 4.5°.
- liquid crystals,
- birefringence,
- phase retardation,
- laser feedback effect,
- anisotropy external cavity feedback

References

[1]	Konforti N, Wu S T, Marom E. Phase-only modulation with twisted nematic liquid-crystal spatial light modulators[J]. Optics Letters, 1988, 13(3):251-253.
[2]	Hirabayashi K. Electrically controllable liquid-crystal rotatable wave plate with variable phase retardation[J]. Applied Optics, 2005, 44(17):3552-3559.
[3]	Ding Haibing, Pang Wenning, Liu Yibao, et al. Photon polarization modulation with liquid crystal variable retarder[J]. Acta Photonica Sinica, 2006, 35(9):1397-1399. (in Chinese)丁海兵, 庞文宁, 刘义保, 等. 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):1397-1399.
[4]	Zhang Ying, Zhao Huijie, Zhou Pengwei, et al. Photoelectric characteristics of liquid crystal variable retarder[J]. Foreign Electronic Measurement Technology, 2009, 28(3):17-20. (in Chinese)张颖, 赵慧洁, 周鹏威, 等. 液晶相位可变延迟器的光电特性研究[J]. 国外电子测量技术, 2009, 28(3):17-20.
[5]	Wang Wei, Li Guohua, Xue Dong. A study of voltage-dependent electric-control birefringence of liquid crystal[J]. Acta Optica Sinica, 2004, 24(7):970-972. (in Chinese)王伟, 李国华, 薛东. 液晶电控双折射率与电压关系的研究[J]. 光学学报, 2004, 24(7):970-972.
[6]	Zhang Hongxin, Zhang Jian, Wu Liying, et al. Wavefront correction using liquid crystal spatial light modulator[J], Infrared and Laser Engineering, 2008, 37(6):1062-1065. (in Chinese)张洪鑫, 张健, 吴丽莹, 等. 液晶空间光调制器用于波前校正的研究[J]. 红外与激光工程, 2008, 37(6):1062-1065.
[7]	Tong Qing, Rong Xing, Zhang Xinyu, et al. Large-area arrayed liquid crystal device for measuring and regulating polarization state of incident light[J]. Infrared and Laser Engineering, 2014, 43(2):474-478. (in Chinese)佟庆, 荣幸, 张新宇, 等. 用于测量和调控入射光偏振态的大面积阵列液晶器件[J]. 红外与激光工程, 2014, 43(2):474-478.
[8]	Pei Yanbo, Yao Fengfeng, Sun Xiudong. Light controlled permanent gratings in nematic liquid crystals[J]. Infrared and Laser Engineering, 2007, 36(2):261-264. (in Chinese)裴延波, 姚凤凤, 孙秀冬. 向列液晶中的光控永久光栅[J]. 红外与激光工程, 2007, 36(2):261-264.
[9]	Zhang Zhiyong, Deng Yuanyong, Wang Dongguang, et al. Comparison and analysis of several methods for measuring waveplate retardation[J]. Optics and Precision Engineering, 2007, 15(11):1678-1685. (in Chinese)张志勇, 邓元勇, 王东光, 等. 几种波片位相延迟测量方法的比较[J]. 光学精密工程, 2007, 15(11):1678-1685.
[10]	Hu Jianming, Zeng Aijun, Wang Xiangchao. New method for measuring retardation of quarter-wave plate[J]. Chinese Journal of Lasers, 2006, 33(5):659-662. (in Chinese)胡建明, 曾爱军, 王向朝. 精确测量1/4波片相位延迟量的新方法[J]. 中国激光, 2006, 33(5):659-662.
[11]	Wang Lan, Li Guohua, Kong Chao, et al. Phase retardation measurement with two λ/4 wave plates[J]. Laser Technology, 2007, 31(6):663-664. (in Chinese)王兰, 李国华, 孔超, 等. 波片位相延迟测量的双λ/4波片法[J]. 激光技术, 2007, 31(6):663-664.
[12]	Aouadi S M, Mihut D M, Kuruppu M L, et al. Spectroscopic ellipsometry measurements of chromium nitride coatings[J]. Journal of Vacuum Science & Technology A, 2001, 19(6):2800-2804.
[13]	Xiao Haosu, Zhang Yunqiang, Fan Zhigang, et al. Precision analysis of polarization interference method for measuring stress birefringence of crystal[J]. Infrared and Laser Εngineering, 2011, 40(2):271-276. (in Chinese)肖昊苏, 张运强, 范志刚,等. 偏振干涉法测量晶体应力双折射精度分析[J]. 红外与激光工程, 2011, 40(2):271-276.
[14]	Zhang Shulian. Principle of Orthogonally Polarized Laser[M]. Beijing:Tsinghua University Press, 2005. (in Chinese)张书练. 正交偏振激光原理[M]. 北京:清华大学出版社有限公司, 2005.
[15]	Zhang S, Holzapfel W. Orthogonal Polarization in Lasers:Physical Phenomena and Engineering Applications[M]. New York:John Wiley & Sons, 2013.
[16]	Tan Yidong, Zhang Song, Zhang Shulian, et al. Response of microchip solid-state laser to external frequency-shifted feedback and its applications[J]. Scientific Reports, 2013, 3(10):2912.
[17]	Fei Ligang, Zhang Shulian, Wan Xinjun. Influence of optical feedback from birefringence external cavity on intensity tuning and polarization of laser[J]. Chinese Physics Letters, 2004, 21(10):1944.
[18]	King P G R, Steward G J. Metrology with an optical maser[J]. New Sci, 1963, 17:180-182.

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通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

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Birefringence measurement of liquid crystals based on laser feedback effect

1. State Key Laboratory of Precision Measurement Technology and Instruments,Department of Precision Instrument,Tsinghua University,Beijing 100084,China;

2. School of Instrumentation Science and Opto-electronics Engineering,Beihang University,Beijing 100191,China;

3. Castech Inc.,Fuzhou 350003,China

Received Date: 2016-07-11

Rev Recd Date: 2016-08-12

Publish Date: 2017-03-25

Key words:

Abstract: The precise measurement of the birefringence in the liquid crystals has significant meaning for practical applications. The working principles of the liquid crystals were analyzed. The laser anisotropy external cavity feedback system was built based on the laser feedback effect. The anisotropy of the liquid crystals under different voltages was measured. The measurement results show that the accuracy of the laser anisotropy external cavity feedback system is within 0.3°; By imposing different voltage from 0 to 24 V, the birefringence changes from 2.74×10-1 to 2.39×10-3, corresponding to the large range phase retardation of 460° to 5°. With the voltage in the range of 0.7 V to 2 V, the relationship between the voltage and the birefringence is linear and its linearity is better than 95.5%. The liquid crystals can provide stable phase retardation, the short-term repeatability is better than 0.52° and the long-term repeatability is better than 4.5°.

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Reference (18)

[1]	Konforti N, Wu S T, Marom E. Phase-only modulation with twisted nematic liquid-crystal spatial light modulators[J]. Optics Letters, 1988, 13(3):251-253.
[2]	Hirabayashi K. Electrically controllable liquid-crystal rotatable wave plate with variable phase retardation[J]. Applied Optics, 2005, 44(17):3552-3559.
[3]	Ding Haibing, Pang Wenning, Liu Yibao, et al. Photon polarization modulation with liquid crystal variable retarder[J]. Acta Photonica Sinica, 2006, 35(9):1397-1399. (in Chinese)丁海兵, 庞文宁, 刘义保, 等. 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):1397-1399.
[4]	Zhang Ying, Zhao Huijie, Zhou Pengwei, et al. Photoelectric characteristics of liquid crystal variable retarder[J]. Foreign Electronic Measurement Technology, 2009, 28(3):17-20. (in Chinese)张颖, 赵慧洁, 周鹏威, 等. 液晶相位可变延迟器的光电特性研究[J]. 国外电子测量技术, 2009, 28(3):17-20.
[5]	Wang Wei, Li Guohua, Xue Dong. A study of voltage-dependent electric-control birefringence of liquid crystal[J]. Acta Optica Sinica, 2004, 24(7):970-972. (in Chinese)王伟, 李国华, 薛东. 液晶电控双折射率与电压关系的研究[J]. 光学学报, 2004, 24(7):970-972.
[6]	Zhang Hongxin, Zhang Jian, Wu Liying, et al. Wavefront correction using liquid crystal spatial light modulator[J], Infrared and Laser Engineering, 2008, 37(6):1062-1065. (in Chinese)张洪鑫, 张健, 吴丽莹, 等. 液晶空间光调制器用于波前校正的研究[J]. 红外与激光工程, 2008, 37(6):1062-1065.
[7]	Tong Qing, Rong Xing, Zhang Xinyu, et al. Large-area arrayed liquid crystal device for measuring and regulating polarization state of incident light[J]. Infrared and Laser Engineering, 2014, 43(2):474-478. (in Chinese)佟庆, 荣幸, 张新宇, 等. 用于测量和调控入射光偏振态的大面积阵列液晶器件[J]. 红外与激光工程, 2014, 43(2):474-478.
[8]	Pei Yanbo, Yao Fengfeng, Sun Xiudong. Light controlled permanent gratings in nematic liquid crystals[J]. Infrared and Laser Engineering, 2007, 36(2):261-264. (in Chinese)裴延波, 姚凤凤, 孙秀冬. 向列液晶中的光控永久光栅[J]. 红外与激光工程, 2007, 36(2):261-264.
[9]	Zhang Zhiyong, Deng Yuanyong, Wang Dongguang, et al. Comparison and analysis of several methods for measuring waveplate retardation[J]. Optics and Precision Engineering, 2007, 15(11):1678-1685. (in Chinese)张志勇, 邓元勇, 王东光, 等. 几种波片位相延迟测量方法的比较[J]. 光学精密工程, 2007, 15(11):1678-1685.
[10]	Hu Jianming, Zeng Aijun, Wang Xiangchao. New method for measuring retardation of quarter-wave plate[J]. Chinese Journal of Lasers, 2006, 33(5):659-662. (in Chinese)胡建明, 曾爱军, 王向朝. 精确测量1/4波片相位延迟量的新方法[J]. 中国激光, 2006, 33(5):659-662.
[11]	Wang Lan, Li Guohua, Kong Chao, et al. Phase retardation measurement with two λ/4 wave plates[J]. Laser Technology, 2007, 31(6):663-664. (in Chinese)王兰, 李国华, 孔超, 等. 波片位相延迟测量的双λ/4波片法[J]. 激光技术, 2007, 31(6):663-664.
[12]	Aouadi S M, Mihut D M, Kuruppu M L, et al. Spectroscopic ellipsometry measurements of chromium nitride coatings[J]. Journal of Vacuum Science & Technology A, 2001, 19(6):2800-2804.
[13]	Xiao Haosu, Zhang Yunqiang, Fan Zhigang, et al. Precision analysis of polarization interference method for measuring stress birefringence of crystal[J]. Infrared and Laser Εngineering, 2011, 40(2):271-276. (in Chinese)肖昊苏, 张运强, 范志刚,等. 偏振干涉法测量晶体应力双折射精度分析[J]. 红外与激光工程, 2011, 40(2):271-276.
[14]	Zhang Shulian. Principle of Orthogonally Polarized Laser[M]. Beijing:Tsinghua University Press, 2005. (in Chinese)张书练. 正交偏振激光原理[M]. 北京:清华大学出版社有限公司, 2005.
[15]	Zhang S, Holzapfel W. Orthogonal Polarization in Lasers:Physical Phenomena and Engineering Applications[M]. New York:John Wiley & Sons, 2013.
[16]	Tan Yidong, Zhang Song, Zhang Shulian, et al. Response of microchip solid-state laser to external frequency-shifted feedback and its applications[J]. Scientific Reports, 2013, 3(10):2912.
[17]	Fei Ligang, Zhang Shulian, Wan Xinjun. Influence of optical feedback from birefringence external cavity on intensity tuning and polarization of laser[J]. Chinese Physics Letters, 2004, 21(10):1944.
[18]	King P G R, Steward G J. Metrology with an optical maser[J]. New Sci, 1963, 17:180-182.

Birefringence measurement of liquid crystals based on laser feedback effect

doi: 10.3788/IRLA201746.0306003

Abstract

References

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通讯作者: 陈斌, bchen63@163.com

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