AOTF成像光谱仪声光晶体衍射效率研究
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摘要
基于AOTF的成像光谱仪是集图像、光谱及偏振信息为一体的新型探测仪器,由于声光晶体是其核心分光器件,它的性能将影响目标信息的获取能力。因此,研究提高声光晶体衍射效率的方法是AOTF成像光谱仪研制的重点和关键。首先介绍了AOTF成像光谱仪的工作原理,基于耦合波理论推导了声光晶体衍射效率方程,然后对AOTF成像光谱仪声光晶体衍射效率的影响因素进行数值仿真分析,最后,用Tracepro软件对不同入射光进行了仿真计算。分析结果表明,当AOTF成像光谱仪工作波长范围在0.4μm~0.9μm时,为使衍射效率能达到最大值,各个影响因素的最优值是:换能器长度d为2.5mm,光栅倾斜角φ选择在80°,入射光选择o光。
The imaging spectrometer based on acoustic-optic tunable filter(AOTF)is a new detector which integrates image,spectrum and polarization information.Because the acousto-optical crystal is the core optical splitter,its performance can affect the acquisition ability of the target information.Therefore,the key point of AOTF imaging spectrometer development is to study the method for improving the diffraction efficiency of acousto-optical crystal.Firstly we introduced the working principle of AOTF imaging spectrometer,derived the acousto-optical crystal diffraction efficiency equation based on coupled wave theory,then analyzed the influencing factors of the AOTF imaging spectrometer on acousto-optical diffraction efficiency by numerical simulation.Finally,through using TracePro software,we simulated and calculated different incident light.The analysis results show that when the AOTF imaging spectrometer works at the wavelength range of 0.4μm~0.9μm,in order to make the diffraction efficiency reach the maximum value and the various influence factors reach the optimal values,the transducer length is d=2.5 mm,the tilt angle of grating selects 80°and the incident light selects o light.
The imaging spectrometer based on acoustic-optic tunable filter(AOTF)is a new detector which integrates image,spectrum and polarization information.Because the acousto-optical crystal is the core optical splitter,its performance can affect the acquisition ability of the target information.Therefore,the key point of AOTF imaging spectrometer development is to study the method for improving the diffraction efficiency of acousto-optical crystal.Firstly we introduced the working principle of AOTF imaging spectrometer,derived the acousto-optical crystal diffraction efficiency equation based on coupled wave theory,then analyzed the influencing factors of the AOTF imaging spectrometer on acousto-optical diffraction efficiency by numerical simulation.Finally,through using TracePro software,we simulated and calculated different incident light.The analysis results show that when the AOTF imaging spectrometer works at the wavelength range of 0.4μm~0.9μm,in order to make the diffraction efficiency reach the maximum value and the various influence factors reach the optimal values,the transducer length is d=2.5 mm,the tilt angle of grating selects 80°and the incident light selects o light.
引文
[1]BAI Ruxue.Partially based on the simulation research of acousto-optic tunable filter[D].Taiyuan:North University of China,2016.白如雪.基于声光可调谐滤波器的部分仿真研究[D].太原:中北大学,2016.
[2]CHANG Lingying,ZHAO Baochang,QIU Yuehong,et al.Optimal scheme of AOTF imaging spectrometer optical system[J].Journal of Applied Optics,2012,33(01):5-8.常凌颖,赵葆常,邱跃洪,等.AOTF成像光谱仪光学系统的最优方案选择[J].应用光学,2012,33(01):5-8.
[3]ZHANG Yan,WANG Xiaobing,GENG Shunshan,et al.MRTD in multi-spectral infrared imaging system based on AOTF[J].Journal of Applied Optics,2016,37(06):932-937.张燕,王小兵,耿顺山,等.基于AOTF的多光谱红外成像系统MRTD测试技术研究[J].应用光学,2016,37(06):932-937.
[4]陈明惠,范云平,张浩,等.基于声光调谐的扫频光源[J].光学精密工程,2016,24(11):2658-2664.CHEN Minghui,FAN Yunping,ZHANG Hao,et al.Swept source laser based on acousto-optic tuning[J].Optics and Precision Engineering,2016,24(11):2658-2664.
[5]汪家春,赵大鹏,杜香华,等.基于AOTF的高光谱偏振成像系统设计与实验[J].红外与激光工程,2017,46(01):37-43.WANG Jiachun,ZHAO Dapeng,DU Xianghua,et al.Design and experiment of hyper-spectral polarization imaging system based on AOTF[J].Infrared and Laser Engineering,2017,46(01):37-43.
[6]GUPTA N,VOLOSHINOV V B.Development and characterization of two-transducer imaging acoustooptic tunable filters with extended tuning range[J].Applied Optics,2007,46(7):1081-1088.
[7]MINDAUGAS Andrulevi cˇius,LINAS Puod zˇiukynas,TOMAS Tamulevi cˇius,et al.Diffraction efficiency and noise analysis of hidden image holograms[J].Optik-International Journal for Light and Electron Optics,2016,131:805-812.
[8]WANG Yaoli.The research on spectropolarimetric imaging system and imaging quality based on AOTF[D].Taiyuan:North University of China,2016.王耀利.基于AOTF的光谱偏振成像系统及其成像质量研究[D].太原:中北大学,2016.
[9]VALLE Stafano.Design and application of high performance acousto-optic tunable filters[D].England:University of Glasgow,2017.
[10]WANG Yujiang,WANG Zhibin,WAN Yaoli,et al.The study on the influence of spectral diffraction efficiency based on the matching network of wide spectrum AOTF[J].Spectroscopy and Spectral Analysis,2016,36(07):2300-2305.王玉江,王志斌,王耀利,等.宽光谱AOTF匹配网络对光谱衍射效率影响的研究[J].光谱学与光谱分析,2016,36(07):2300-2305.
[11]QIN Xiage,JI Zhongpeng,XU Yingyu,et al..Highprecision measurement method and device on diffraction efficiency of acousto-optic tunable filter based on double-optical-path and cross-references[J].Infrared and Laser Engineering,2017,46(04):161-166.秦侠格,姬忠鹏,徐映宇,等.双光路互参考高精度AOTF衍射效率测试方法及装置[J].红外与激光工程,2017,46(04):161-166.
[12]LIU Shuqin,WANG Binyong,XU Rui,et al.Broadspectral-range AOTF performance analysis system based on multi-band acquisition[J].Infrared and Laser Engineering,2015,44(04):1343-1348.刘书勤,王斌永,徐睿,等.基于多谱段集成检测的宽光谱AOTF性能测试系统[J].红外与激光工程,2015,44(04):1343-1348.
[13]PU Shibing.The study of spectral beam combining by volume Bragg grating[D].Beijing:National University of Defense Technology,2008.蒲世兵.基于体布拉格光栅的光谱合成研究[D].北京:国防科学技术大学,2008.
[14]KOGELNIK H.Coupled wave theory for thick hologram gratings[J].The Bell System Technical Journal,1969,48:2909-2945.
[15]ZHANG Chunguang.The technology of the acoustooptic tunable filter based on the hyperspectral imaging system[D].Harbin:Harbin Institute of Technology,2008.张春光.基于超光谱成像系统的声光可调滤波技术研究[D].哈尔滨:哈尔滨工业大学,2008.
[2]CHANG Lingying,ZHAO Baochang,QIU Yuehong,et al.Optimal scheme of AOTF imaging spectrometer optical system[J].Journal of Applied Optics,2012,33(01):5-8.常凌颖,赵葆常,邱跃洪,等.AOTF成像光谱仪光学系统的最优方案选择[J].应用光学,2012,33(01):5-8.
[3]ZHANG Yan,WANG Xiaobing,GENG Shunshan,et al.MRTD in multi-spectral infrared imaging system based on AOTF[J].Journal of Applied Optics,2016,37(06):932-937.张燕,王小兵,耿顺山,等.基于AOTF的多光谱红外成像系统MRTD测试技术研究[J].应用光学,2016,37(06):932-937.
[4]陈明惠,范云平,张浩,等.基于声光调谐的扫频光源[J].光学精密工程,2016,24(11):2658-2664.CHEN Minghui,FAN Yunping,ZHANG Hao,et al.Swept source laser based on acousto-optic tuning[J].Optics and Precision Engineering,2016,24(11):2658-2664.
[5]汪家春,赵大鹏,杜香华,等.基于AOTF的高光谱偏振成像系统设计与实验[J].红外与激光工程,2017,46(01):37-43.WANG Jiachun,ZHAO Dapeng,DU Xianghua,et al.Design and experiment of hyper-spectral polarization imaging system based on AOTF[J].Infrared and Laser Engineering,2017,46(01):37-43.
[6]GUPTA N,VOLOSHINOV V B.Development and characterization of two-transducer imaging acoustooptic tunable filters with extended tuning range[J].Applied Optics,2007,46(7):1081-1088.
[7]MINDAUGAS Andrulevi cˇius,LINAS Puod zˇiukynas,TOMAS Tamulevi cˇius,et al.Diffraction efficiency and noise analysis of hidden image holograms[J].Optik-International Journal for Light and Electron Optics,2016,131:805-812.
[8]WANG Yaoli.The research on spectropolarimetric imaging system and imaging quality based on AOTF[D].Taiyuan:North University of China,2016.王耀利.基于AOTF的光谱偏振成像系统及其成像质量研究[D].太原:中北大学,2016.
[9]VALLE Stafano.Design and application of high performance acousto-optic tunable filters[D].England:University of Glasgow,2017.
[10]WANG Yujiang,WANG Zhibin,WAN Yaoli,et al.The study on the influence of spectral diffraction efficiency based on the matching network of wide spectrum AOTF[J].Spectroscopy and Spectral Analysis,2016,36(07):2300-2305.王玉江,王志斌,王耀利,等.宽光谱AOTF匹配网络对光谱衍射效率影响的研究[J].光谱学与光谱分析,2016,36(07):2300-2305.
[11]QIN Xiage,JI Zhongpeng,XU Yingyu,et al..Highprecision measurement method and device on diffraction efficiency of acousto-optic tunable filter based on double-optical-path and cross-references[J].Infrared and Laser Engineering,2017,46(04):161-166.秦侠格,姬忠鹏,徐映宇,等.双光路互参考高精度AOTF衍射效率测试方法及装置[J].红外与激光工程,2017,46(04):161-166.
[12]LIU Shuqin,WANG Binyong,XU Rui,et al.Broadspectral-range AOTF performance analysis system based on multi-band acquisition[J].Infrared and Laser Engineering,2015,44(04):1343-1348.刘书勤,王斌永,徐睿,等.基于多谱段集成检测的宽光谱AOTF性能测试系统[J].红外与激光工程,2015,44(04):1343-1348.
[13]PU Shibing.The study of spectral beam combining by volume Bragg grating[D].Beijing:National University of Defense Technology,2008.蒲世兵.基于体布拉格光栅的光谱合成研究[D].北京:国防科学技术大学,2008.
[14]KOGELNIK H.Coupled wave theory for thick hologram gratings[J].The Bell System Technical Journal,1969,48:2909-2945.
[15]ZHANG Chunguang.The technology of the acoustooptic tunable filter based on the hyperspectral imaging system[D].Harbin:Harbin Institute of Technology,2008.张春光.基于超光谱成像系统的声光可调滤波技术研究[D].哈尔滨:哈尔滨工业大学,2008.