宽波段铁电液晶偏振态分析器的优化设计
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摘要
铁电液晶偏振态分析器(PSA)是宽波段偏振成像的核心组件,其抑制噪声的能力对偏振测量结果具有重要影响,因此解决宽波段铁电液晶PSA优化设计问题具有重要意义。根据宽波段偏振成像测量的基本原理推导出铁电液晶PSA的斯托克斯测量矩阵,采用遗传算法和条件数(CN)、同样加权方差(EWV)评价准则对偏振器件的方位角参数进行优化设计,得到铁电液晶PSA的最佳器件组合方式和方位角参数。最后,根据优化设计结果搭建多波段实验装置,对3D眼镜和偏振片进行成像测量实验。实验结果表明利用所设计方法实现的偏振测量装置能够有效测量出目标的偏振特性。
Polarization state analyzer(PSA)of ferroelectric liquid crystal is the core component for broadband polarization imaging.The ability of suppressing noise highly affects the polarization measurement results.Therefore,solving optimal design problem of broadband PSA of ferroelectric liquid crystal has a great significance.The Stokes measurement matrix of the PSA of ferroelectric liquid crystal is deduced in terms of the basic principle of broadband polarization imaging measurement.The azimuth parameters of polarization devices are optimized by genetic algorithm,evaluation criteria of condition number(CN)and equally weighted variance(EWV).The optimal device combination and optimal azimuth parameters of PSA of ferroelectric liquid crystal are obtained.Finally,a multi-band experimental device is set up according to the results of optimal design.The imaging experiments are carried out by measuring the3 D glasses and the polarizer.The experimental results show that the polarization measurement device,which is designed by the proposed method,can effectively measure the polarization characteristic of the targets.
Polarization state analyzer(PSA)of ferroelectric liquid crystal is the core component for broadband polarization imaging.The ability of suppressing noise highly affects the polarization measurement results.Therefore,solving optimal design problem of broadband PSA of ferroelectric liquid crystal has a great significance.The Stokes measurement matrix of the PSA of ferroelectric liquid crystal is deduced in terms of the basic principle of broadband polarization imaging measurement.The azimuth parameters of polarization devices are optimized by genetic algorithm,evaluation criteria of condition number(CN)and equally weighted variance(EWV).The optimal device combination and optimal azimuth parameters of PSA of ferroelectric liquid crystal are obtained.Finally,a multi-band experimental device is set up according to the results of optimal design.The imaging experiments are carried out by measuring the3 D glasses and the polarizer.The experimental results show that the polarization measurement device,which is designed by the proposed method,can effectively measure the polarization characteristic of the targets.
引文
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[24]Tyo J S.Design of optimal polarimeters:maximization of signal-to-noise ratio and minimization of systematic error[J].Applied Optics,2002,41(4):619-630.
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[27]Twietmeyer K M,Chipman R A.Optimization of Mueller matrix polarimeters in the presence of error sources[J].Optics Express,2008,16(15):11589-11603.
[28]Ambirajan A,Look D C,Jr.Optimum angles for a polarimeter:Part II[J].Optical Engineering,1995,34(6):1656-1658.
[29]Goudail F.Noise minimization and equalization for Stokes polarimeters in the presence of signal-dependent Poisson shot noise[J].Optics Letters,2009,34(5):647-649.
[2]Tyo J S,Goldstein D L,Chenault D B,etal.Review of passive imaging polarimetry for remote sensing applications[J].Applied Optics,2006,45(22):5453-5469.
[3]Tyo J S,Jurner T S.Imaging spectropolarimeters for use in visible and infrared remote sensing[C].SPIE,1999,3753:214-224.
[4]Gupta N,Suhre D R.Acousto-optic tunable filter imaging spectrometer with full Stokes polarimetric capability[J].Applied Optics,2007,46(14):2632-2637.
[5]Craven-Jones J,Kudenov M W,Stapelbroek M G,et al.Infrared hyperspectral imaging polarimeter using birefringent prisms[J].Applied Optics,2011,50(8):1170-1185.
[6]Zhang C M,Li Q W,Yan T Y,et al.High throughput static channeled interference imaging spectropolarimeter based on a Savart polariscope[J].Optics Express,2016,24(20):23314-23332.
[7]Li J,Zhu J P,Wu H Y.Compact static Fourier transform imaging spectropolarimeter based on channeled polarimetry[J].Optics Letters,2010,35(22):3784-3786.
[8]Meng X,Li J X,Liu D F,et al.Fourier transform imaging spectropolarimeter using simultaneous polarization modulation[J].Optics Letters,2013,38(5):778-780.
[9]Zhang Ying,Zhao Huijie,Cheng Xuan,et al.Design of full-polarized and multi-spectral imaging system based on LCVR[J].Spectroscopy and Spectral Analysis,2011,31(5):1375-1378.张颖,赵慧洁,程宣,等.基于LCVR调谐的全偏振多谱段成像系统[J].光谱学与光谱分析,2011,31(5):1375-1378.
[10]Xue Peng,Wang Zhibin,Zhang Rui,et al.Highly efficient measurement technology based on hyperspectropolarimetric imaging[J].Chinese J Lasers,2016,43(8):0811001.薛鹏,王志斌,张瑞,等.高光谱全偏振成像快捷测量技术研究[J].中国激光,2016,43(8):0811001.
[11]Hu Qiaoyun,Yang Weifeng,Hu Yadong,et al.Principle and simulation of a spatially modulated full Stokes parameters polarization imaging system[J].Acta Optica Sinica,2015,35(2):0211004.胡巧云,杨伟锋,胡亚东,等.空间调制型全Stokes参量偏振成像系统原理及仿真[J].光学学报,2015,35(2):0211004.
[12]Dong Ying,Xiangli Bin,Zhao Baochang.Analysis of interferometer systerm in a large aperture static imaging spectrometer[J].Acta Optica Sinica,2001,21(3):330-334.董瑛,相里斌,赵葆常.大孔径静态干涉成像光谱仪的干涉系统分析[J].光学学报,2001,21(3):330-334.
[13]Zhang Chunmin,Huang Weijian,Zhao Baochang.Analysis and evaluation on the noise of novel polarization interference imaging spectrometer[J].Acta Physica Sinica,2010,59(8):5479-5486.张淳民,黄伟健,赵葆常.新型偏振干涉成像光谱仪噪声分析与评价[J].物理学报,2010,59(8):5479-5486.
[14]Li Jie,Zhu Jingping,Qi Chun,et al.Large aperture static hyperspectral imaging full polarimetry[J].Infrared and Laser Engineering,2014,43(2):574-578.李杰,朱京平,齐春,等.大孔径静态超光谱全偏振成像技术[J].红外与激光工程,2014,43(2):574-578.
[15]Liu Yang,Liao Ningfang,Bai Tingzhu,et al.Study of the structure of large aperture ultraviolet Fourier transform imaging spectrometer[J].Acta Optica Sinica,2014,34(3):0330001.刘洋,廖宁放,白廷柱,等.一种大孔径紫外傅里叶变换成像光谱仪结构研究[J].光学学报,2014,34(3):0330001.
[16]Li Jianxin,Meng Xin,Zhou Wei,et al.Image plane interferometric hyperspectral imaging based on re-imaging[J].Acta Optica Sinica,2012,32(12):1230001.李建欣,孟鑫,周伟,等.基于二次成像的像面干涉高光谱成像方法[J].光学学报,2012,32(12):1230001.
[17]Bai Caixun,Li Jianxin,Meng Xin,et al.Hyperspectral imaging based on symmetric wedgy interferometric cavity[J].Acta Optica Sinica,2015,35(8):0811002.柏财勋,李建欣,孟鑫,等.基于对称楔形干涉腔的高光谱成像方法[J].光学学报,2015,35(8):0811002.
[18]Ladstein J,Kildemo M,Svendsen G K,et al.Characterisation of liquid crystals for broadband optimal design of Mueller matrix ellipsometers[C].SPIE,2007,6587:65870D.
[19]Mu T K,Chen Z Y,Zhang C M,et al.Optimal design and performance metric of broadband full-Stokes polarimeters with immunity to Poisson and Gaussian noise[J].Optics Express,2016,24(26):29691-29704.
[20]Letnes P A,NerbI S,Aas L M S,et al.Fast and optimal broad-band Stokes/Mueller polarimeter design by the use of a genetic algorithm[J].Optics Express,2010,18(22):23095-23103.
[21]Zallat J,A6nouz S,Stoll M P.Optimal configurations for imaging polarimeters:impact of image noise and systematic errors[J].Journal of Optics A:Pure and Applied Optics,2006,8(9):807-814.
[22]Sabatke D S,Locke A M,Descour M R,et al.Figures of merit for complete Stokes polarimeter optimization[C].SPIE,2000,4133:75-81.
[23]Sabatke D S,Descour M R,Dereniak E L,et al.Optimization of retardance for a complete Stokes polarimeter[J].Optics Letters,2000,25(11):802-804.
[24]Tyo J S.Design of optimal polarimeters:maximization of signal-to-noise ratio and minimization of systematic error[J].Applied Optics,2002,41(4):619-630.
[25]Golub G H,van Loan C F.Matrix computation[M].Baltimore:The Johns Hopkins University Press,1996.
[26]Zhou Ming,Sun Shudong.Genetic algorithms theory and applications[M].Beijing:National Defence Industry Press,1999.周明,孙树栋.遗传算法原理及应用[M].北京:国防工业出版社,1999.
[27]Twietmeyer K M,Chipman R A.Optimization of Mueller matrix polarimeters in the presence of error sources[J].Optics Express,2008,16(15):11589-11603.
[28]Ambirajan A,Look D C,Jr.Optimum angles for a polarimeter:Part II[J].Optical Engineering,1995,34(6):1656-1658.
[29]Goudail F.Noise minimization and equalization for Stokes polarimeters in the presence of signal-dependent Poisson shot noise[J].Optics Letters,2009,34(5):647-649.
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