基于双直角分束器的反射式静态傅里叶光谱仪光学系统
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摘要
基于双直角分束器设计了一种反射式静态傅里叶变换光谱仪光学系统,并搭建了样机。该光谱仪光学系统的分光装置采用双直角分束器,其他光路全部采用反射式结构,有效折叠光路,与透射式静态傅里叶光谱仪相比,系统体积减小一半以上。用汞灯作为静态傅里叶光谱仪光源时,得到了404.7,435.8,546.1,577.0nm的峰值谱线,实验结果很好地复原了汞灯实际光谱;用波长为650nm的激光进行实验,光谱分辨率约为5.93nm,与理论计算结果基本相符。该光学系统具有结构紧凑、体积小、重量轻、抗震性强等诸多优点,可为小型化、便携式静态傅里叶光谱仪器的研制提供技术支持。
An optical system of reflective static Fourier transform spectrometer is designed based on the double rightangle beam splitter,and the prototype is built.The light splitting device of the spectrometer optical system adopts double right-angle beam splitter,and the other optical paths adopt the reflective structure to fold the optical path effectively.Compared with the transmission-type static Fourier spectrometer,the volume of the system is reduced by more than half.The peak spectrum lines of 404.7,435.8,546.1,577.0nm are obtained by using mercury lamp as the light source of static Fourier spectrometer.The result shows that the actual spectrum of the mercury lamp is well reconstructed.The experimental results show that the spectral resolution is about 5.93 nm at the laser wavelength of 650 nm,which is consistent well with the result of theoretical calculation.The optical system has many advantages,such as compact structure,small size,light weight,strong seismic resistance,etc.It can provide the technical support for the development of miniaturized and portable static Fourier spectrometer.
An optical system of reflective static Fourier transform spectrometer is designed based on the double rightangle beam splitter,and the prototype is built.The light splitting device of the spectrometer optical system adopts double right-angle beam splitter,and the other optical paths adopt the reflective structure to fold the optical path effectively.Compared with the transmission-type static Fourier spectrometer,the volume of the system is reduced by more than half.The peak spectrum lines of 404.7,435.8,546.1,577.0nm are obtained by using mercury lamp as the light source of static Fourier spectrometer.The result shows that the actual spectrum of the mercury lamp is well reconstructed.The experimental results show that the spectral resolution is about 5.93 nm at the laser wavelength of 650 nm,which is consistent well with the result of theoretical calculation.The optical system has many advantages,such as compact structure,small size,light weight,strong seismic resistance,etc.It can provide the technical support for the development of miniaturized and portable static Fourier spectrometer.
引文
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[16]Ferrec Y,Taboury J,Sauer H,et al.Optimal geometry for Sagnac and Michelson interferometers used as spectral imagers[J].Optical Engineering,2006,45(11):115601.
[2]Xiangli Bin,Zhao Baochang,Xue Mingqiu.Spatially modulated imaging interferometry[J].Acta Optica Sinica,1998,18(1):18-22.相里斌,赵葆常,薛鸣球.空间调制干涉成像光谱技术[J].光学学报,1998,18(1):18-22.
[3]Zhang Chunmin,Xiangli Bin,Zhao Baochang,et al.The latest developments of technique of interference imaging spectrometer[J].Optical Technique,2000,26(3):232-234.张淳民,相里斌,赵葆常,等.干涉成像光谱仪技术的新发展[J].光学技术,2000,26(3):232-234.
[4]Yu Xinyang,Lu Qipeng,Gao Hongzhi,et al.Current status and prospects of portable NIR spectrometer[J].Spectroscopy and Spectral Analysis,2013,33(11):2983-2988.于新洋,卢启鹏,高洪智,等.便携式近红外光谱仪器现状及展望[J].光谱学与光谱分析,2013,33(11):2983-2988.
[5]Li Jianhua,Xue Feng,Xue Lian,et al.Performance test of Fourier transform infrared imaging spectrometer[J].Optics and Precision Engineering,2015,23(10z):191-197.李建华,薛峰,薛莲,等.红外傅里叶变换成像光谱仪关键参数测试[J].光学精密工程,2015,23(10z):191-197.
[6]Fu Jianguo,Liang Jingqiu,Liang Zhongzhu.Tolerance analysis for a static Fourier-transform infrared spectrometer based on multi-micro mirrors[J].Acta Optica Sinica,2012,32(6):0607002.付建国,梁静秋,梁中翥.静态傅里叶变换红外光谱仪的公差分析[J].光学学报,2012,32(6):0607002.
[7]Tang Yuanhe,Chen Guangde,Zhao Zhenyu,et al.Optical throughput of modified Sagnac imaging interferometer[J].Acta Optica Sinica,2007,27(8):1490-1493.唐远河,陈光德,赵振宇,等.改型萨尼亚克成像干涉仪的光通量[J].光学学报,2007,27(8):1490-1493.
[8]Zheng Yuquan,Wang Hui,Wang Yifan.Selection and design of optical systems for space borne hyper spectral imagers[J].Optics and Precision Engineering,2009,17(11):2629-2637.郑玉权,王慧,王一凡.星载高光谱成像仪光学系统的选择与设计[J].光学精密工程,2009,17(11):2629-2637.
[9]Ferrec Y,Taboury J,Sauer H,et al.Compactness of lateral shearing interferometers[J].Applied Optics,2011,50(23):4656-4663.
[10]Barducci A,Castagnoli F,Marcoionni P,et al.The ALISEO instrument:further improvements of calibration methods and assessment of interferometer response[C].SPIE,2005,5978:461-470.
[11]Tang Yuanhe,Guo Ting,Gao Haiyang.Modulation transfer function of modified Sagnac imaging interferometer[J].Acta Optica Sinica,2010,30(6):1651-1655.唐远河,郭挺,郜海阳.改型Sagnac成像干涉仪的调制传递函数研究[J].光学学报,2010,30(6):1651-1655.
[12]Sellar R G,Rafert J B.Effects of aberrations on spatially modulated Fourier transform spectrometers[J].Optical Engineering,1994,33(9):3087-3092.
[13]Xu Rongwei,Liu Hongzhan,Liu Liren.Phase-shifting vectorial-shearing interferometer with Mach-Zehnder configuration[J].Acta Optica Sinica,2006,26(2):269-274.徐荣伟,刘宏展,刘立人.马赫-曾德尔型相移矢量剪切干涉仪[J].光学学报,2006,26(2):269-274.
[14]Tang Yi,Ni Guoqiang,Liao Ningfang,et al.Spatial modulation imaging spectrometer based on the Michelson interferometer[J].Optical Technique,2007,33(3):427-429.唐义,倪国强,廖宁放,等.基于迈克耳逊干涉仪的空间调制型干涉成像光谱仪[J].光学技术,2007,33(3):427-429.
[15]Moreno I,Paez G,Strojnik M.Compact reversal rotationally shearing interferometer[C].SPIE,2003,5152:365-372.
[16]Ferrec Y,Taboury J,Sauer H,et al.Optimal geometry for Sagnac and Michelson interferometers used as spectral imagers[J].Optical Engineering,2006,45(11):115601.