一种高线色散率测温激光雷达双光栅光谱仪
|
摘要
与目前广泛应用的532nm波段的发射波长相比,采用355nm波段发射波长进行大气温度观测对分光光谱仪的精度要求更高,分光光谱仪的线色散率要达到0.1nm/mm。提出了一种新型高线色散率纯转动拉曼激光雷达分光光谱仪,通过设计双光栅结构来达到激光雷达纯转动拉曼回波信号分光的目的。利用Zemax软件进行设计,模拟分析结果显示:间隔0.1nm的两个相邻光谱在分光光谱仪聚焦镜焦平面处两个相邻谱线中心可以分开1mm,满足测温纯转动拉曼分光光谱仪线色散率达到0.1nm/mm的要求。将实验得到的斯托克斯回波信号强度与理论计算结果进行对比,验证了纯转动拉曼雷达中应用双光栅光谱仪的可行性。
Compared with the widely used emission wavelength of 532 nm,the atmospheric temperature observation using the emission wavelength of 355 nm requires higher precision of the spectroscopic spectrometer,and the line dispersion rate of the spectroscopic spectrometer should reach 0.1 nm/mm.A new high linear dispersion pure rotational Raman laser lidar spectrophotometer is proposed,which uses the double grating structure to achieve the purpose of laser lidar pure rotational Raman echo signal separation.Zemax software is used to design,simulation results show that the interval of 0.1 nm in two adjacent spectrum spectral optical system focus lens focal plane in the center of two adjacent line can be separated from 1 mm,which satisfies the requirement of line dispersion rate of temperature measuring pure rotational Raman spectroscopic spectrometer to reach 0.1 nm/mm.Comparing the experimental Stokes echo signal strength with theoretical calculation,the feasibility of the double grating spectrometer in the pure rotational Raman lidar is verified.
Compared with the widely used emission wavelength of 532 nm,the atmospheric temperature observation using the emission wavelength of 355 nm requires higher precision of the spectroscopic spectrometer,and the line dispersion rate of the spectroscopic spectrometer should reach 0.1 nm/mm.A new high linear dispersion pure rotational Raman laser lidar spectrophotometer is proposed,which uses the double grating structure to achieve the purpose of laser lidar pure rotational Raman echo signal separation.Zemax software is used to design,simulation results show that the interval of 0.1 nm in two adjacent spectrum spectral optical system focus lens focal plane in the center of two adjacent line can be separated from 1 mm,which satisfies the requirement of line dispersion rate of temperature measuring pure rotational Raman spectroscopic spectrometer to reach 0.1 nm/mm.Comparing the experimental Stokes echo signal strength with theoretical calculation,the feasibility of the double grating spectrometer in the pure rotational Raman lidar is verified.
引文
[1] Arshinov Y F,Bobrovnikov S M,Zuev V E,et al.Atmospheric temperature measurements using apure rotational Raman lidar[J].Applied Optics,1983,22(19):2984-2990.
[2] Nedeljkovic D, Hauchecorne A, Chanin M L.Rotational Raman lidar to measure the atmospheric temperature from the ground to 30km[J].IEEE Transactions on Geoscience and Remote Sensing,1993,31(1):90-101.
[3] Ansmann A,Arshinov Y,Bobrovnikov S M,et al.Double-grating monochromator for a pure rotational Raman lidar[J].Proceedings of SPIE,1999,3583:49l-497.
[4] Norton E G,Povey I M,South A M,etal.Broadband CCD detection system for rotational Raman lidar studies of the troposphere[J].Proceedings of SPIE,2001,4153:657-663.
[5] Wang H W,Hua D X,Wang Y F,et al.Design and analysis of new spectroscopic system of Raman lidar for detection of atmospheric water vapor[J].Acta Physica Sinica,2013,62(12):120701.王红伟,华灯鑫,王玉峰,等.水汽探测拉曼激光雷达的新型光谱分光系统设计与分析[J].物理学报,2013,62(12):120701.
[6] Liu Y L,Zhang Y C,Su J,et al.Rotational Raman lidarforatmospherictemperatureprofiles measurements in the lower-air[J].Opto-Electronic Engineering,2006,33(10):43-48.刘玉丽,张寅超,苏嘉,等.探测低空大气温度分布的转动拉曼激光雷达[J].光电工程,2006,33(10):43-48.
[7] Imaki M, Kawai H, Kato T,et al. Efficient ultraviolet rotational Raman lidar for temperature profiling of the planetary boundary layer[J].Japanese Journal of Applied Physics,2012,51:052401.
[8] Ristori P, Froidevaux M, Dinoev T,et al.Development of a temperature and water vapor Raman lidar for turbulent observations[J].Proceedings of SPIE,2005,5984:59840F.
[9] Kim D,Park S,Cha H,et al.New multi-quantum number rotationalRamanlidarforobtaining temperature and aerosol extinction and backscattering scattering coefficients[J].Applied Physics B,2006,82(1):1-4.
[10] Hao A H,He F T,Li L B,et al.Design of widefield and flat-spectrum holographic concave grating spectrometer[J].Acta Optica Sinica,2018,38(2):0230003.郝爱花,贺锋涛,李立波,等.宽场平谱面全息凹面光栅光谱仪的设计[J].光学学报,2018,38(2):0230003.
[2] Nedeljkovic D, Hauchecorne A, Chanin M L.Rotational Raman lidar to measure the atmospheric temperature from the ground to 30km[J].IEEE Transactions on Geoscience and Remote Sensing,1993,31(1):90-101.
[3] Ansmann A,Arshinov Y,Bobrovnikov S M,et al.Double-grating monochromator for a pure rotational Raman lidar[J].Proceedings of SPIE,1999,3583:49l-497.
[4] Norton E G,Povey I M,South A M,etal.Broadband CCD detection system for rotational Raman lidar studies of the troposphere[J].Proceedings of SPIE,2001,4153:657-663.
[5] Wang H W,Hua D X,Wang Y F,et al.Design and analysis of new spectroscopic system of Raman lidar for detection of atmospheric water vapor[J].Acta Physica Sinica,2013,62(12):120701.王红伟,华灯鑫,王玉峰,等.水汽探测拉曼激光雷达的新型光谱分光系统设计与分析[J].物理学报,2013,62(12):120701.
[6] Liu Y L,Zhang Y C,Su J,et al.Rotational Raman lidarforatmospherictemperatureprofiles measurements in the lower-air[J].Opto-Electronic Engineering,2006,33(10):43-48.刘玉丽,张寅超,苏嘉,等.探测低空大气温度分布的转动拉曼激光雷达[J].光电工程,2006,33(10):43-48.
[7] Imaki M, Kawai H, Kato T,et al. Efficient ultraviolet rotational Raman lidar for temperature profiling of the planetary boundary layer[J].Japanese Journal of Applied Physics,2012,51:052401.
[8] Ristori P, Froidevaux M, Dinoev T,et al.Development of a temperature and water vapor Raman lidar for turbulent observations[J].Proceedings of SPIE,2005,5984:59840F.
[9] Kim D,Park S,Cha H,et al.New multi-quantum number rotationalRamanlidarforobtaining temperature and aerosol extinction and backscattering scattering coefficients[J].Applied Physics B,2006,82(1):1-4.
[10] Hao A H,He F T,Li L B,et al.Design of widefield and flat-spectrum holographic concave grating spectrometer[J].Acta Optica Sinica,2018,38(2):0230003.郝爱花,贺锋涛,李立波,等.宽场平谱面全息凹面光栅光谱仪的设计[J].光学学报,2018,38(2):0230003.