偏振光谱识别光学系统的复原方法与设计
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摘要
为准确方便获取4个波长相关的斯托克斯参量,可采用强度调制型偏振光谱成像技术,从偏振光谱强度调制理论与傅里叶变换解调方法入手分析推导计算了偏振光谱信息的复原过程,据此得到了系统的基本结构。以模块化设计的思路分别设计了光谱部分光学系统的前置望远物镜及Offner分光系统,设计结果实现了在400～1 000 nm谱段光谱分辨率1.24 nm,并结合光谱系统参数匹配设计完成了前端偏振光谱调制模块,给出了一套完整的设计实例。最后通过实验验证了偏振光谱调制模块设计的合理性与傅里叶变换解调方法的可行性,为偏振光谱信息复原奠定了基础。
In order to accurately and easily obtain four wavelength-dependent Stokes parameters, the intensity modulated polarization spectral imaging technology was used. The process of the restoration of polarization spectrum was calculated and derived from polarization spectrum intensity modulation theory and Fourier transform demodulation analysis, and the basic structure of the system was obtained.According to the modular design concept, the forward telescope objective lens and Offner spectral dispersion system of the spectrometer optical system were designed, which achieved a spectral resolution of 1.24 nm in the 400-1 000 nm spectral range. And then the front polarization spectrum modulation module was designed based on spectral system parameter, so a comp lete design example was given.Finally, the reasonability of the polarization spectrum modulation module design and feasibility of the Fourier transform demodulation method were verified by experiments, which lays the foundation for the recovery of polarization spectrum.
In order to accurately and easily obtain four wavelength-dependent Stokes parameters, the intensity modulated polarization spectral imaging technology was used. The process of the restoration of polarization spectrum was calculated and derived from polarization spectrum intensity modulation theory and Fourier transform demodulation analysis, and the basic structure of the system was obtained.According to the modular design concept, the forward telescope objective lens and Offner spectral dispersion system of the spectrometer optical system were designed, which achieved a spectral resolution of 1.24 nm in the 400-1 000 nm spectral range. And then the front polarization spectrum modulation module was designed based on spectral system parameter, so a comp lete design example was given.Finally, the reasonability of the polarization spectrum modulation module design and feasibility of the Fourier transform demodulation method were verified by experiments, which lays the foundation for the recovery of polarization spectrum.
引文
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[15] Song Zhiping, H ong Ji n, Qiao Yanli. System design of intensity modulation polarization spectrometer[J].Optics and Precision Engineering, 2010, 18(11):2325-2331.(in Chinese)宋志平,洪津,乔延利.强度调制偏振光谱仪的系统设计[J].光学精密工程, 2010, 18(11):2325-2331.
[2] 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.
[3] Li Shujun, Jiang Huilin, Zhu Jingping, et al.Development status and key technologies of polarization imaging detection technology[J]. Chinese Optics, 2013, 6(6):803-809.(in Chinese)李淑军,姜会林,朱京平,等.偏振成像探测技术发展现状及关键技术[J].中国光学, 2013, 6(6):803-809.
[4] Li Jie, Zhu Jingping, Qi Chun, et al. Large-aperture static hyperspectral full polarization imaging technology[J]. Infrared and Laser Engineering, 2014, 43(2):574-578.(in Chinese)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.
[5] Tyo J S, Goldstein D L, Chenault D B, et al. Review of passive imaging polarimetry for remote sensing applications[J]. Appl Opt, 2006, 45(22):5453-5469.
[6] Oka K, Kato T. Spectroscopic polarimetry with a channeled spectrum[J]. Optics Letters, 1999, 24(21):1475-1477.
[7] Wang Xinquan, Xiangli Bin, Huang Wen, et al.Research and simulation of intensity modulation-fourier transform spectral polarization technology[J].Spectroscopy and Spectral Analysis, 2011, 31(7):1980-1984.(in Chinese)王新全,相里斌,黄旻,等.强度调制-傅里叶变换光谱偏振技术研究与仿真[J].光谱学与光谱分析, 2011, 31(7):1980-1984.
[8] Wang Dong, Yan Changxiang, Zhang Junqiang, et al.High-precision adjustment method of spectral polarization modulator[J]. Chinese Optics, 2016, 9(1):144-154.(in Chinese)王东,颜昌翔,张军强,等.光谱偏振调制器的高精度装调方法[J].中国光学, 2016, 9(1):144-154.
[9] Taniguchi A, Okabe H, Oka K, et al. Stabilization of a channeled spectropolarimeter by self-calibration[J].Optics Letters, 2006, 31(22):3279-3281.
[10] Yang B, Ju X, Yan C, et al. Alignment errors calibration for a channeled spectropolarimeter[J]. Optics Express, 2016, 24(25):28923.
[11] Vujkoviccvijin P, Goldstein N, Fox M J, et al.Adaptive spectral imager for space-based sensing[C]//SPIE, 2006, 6206:62063X.
[12] Wu Congjun, Yan Changxiang, Liu Wei, et al. Optical design of subfield-of-view imaging spectrometer based on Offner structure[J]. Spectroscopy and Spectral Analysis, 2013, 33(8):2272-2276.(in Chinese)吴从均,颜昌翔,刘伟,等.基于Offner结构分视场成像光谱仪光学设计[J].光谱学与光谱分析, 2013, 33(8):2272-2276.
[13] Huang Xujie, Yan Yangming, Pan Qiao, et al. Optical design of multi-angle polarization imaging spectrometer[J]. Infrared and Laser Engineering, 2017, 46(11):1118002.(in Chinese)黄绪杰,靳阳明,潘俏,等.多角度偏振成像光谱仪的光学设计[J].红外与激光工程, 2017, 46(11):1118002.
[14] Hagen N, Oka K, Dereniak E L. Snapshot Mueller matrix spectropolarimeter:erratum.[J]. Optics Letters,2013, 38(10):1675-1675.
[15] Song Zhiping, H ong Ji n, Qiao Yanli. System design of intensity modulation polarization spectrometer[J].Optics and Precision Engineering, 2010, 18(11):2325-2331.(in Chinese)宋志平,洪津,乔延利.强度调制偏振光谱仪的系统设计[J].光学精密工程, 2010, 18(11):2325-2331.