Field-compensated tunable Mach-Zehnder interferometer for a multi-mode high-spectral-resolution lidar in the application of aerosol measurements

Hengshuai Nan; Fei Gao; Bo Huang; Rui Zhang; Qingsong Zhu; Li Wang; Dengxin Hua

doi:10.1117/12.2500403

24 July 2018 Field-compensated tunable Mach-Zehnder interferometer for a multi-mode high-spectral-resolution lidar in the application of aerosol measurements

Hengshuai Nan, Fei Gao, Bo Huang, Rui Zhang, Qingsong Zhu, Li Wang, Dengxin Hua

Author Affiliations +

Proceedings Volume 10827, Sixth International Conference on Optical and Photonic Engineering (icOPEN 2018); 108272O (2018) https://doi.org/10.1117/12.2500403
Event: Sixth International Conference on Optical and Photonic Engineering (icOPEN 2018), 2018, Shanghai, China

Abstract

High-spectral-resolution lidar plays an important role in the measurement of aerosol distributions and variations for understanding the influence on the local environment. The multi-mode high-spectral-resolution lidar is a new type of high-spectral-resolution lidar for fine detection of aerosol optical properties, which uses the multilongitudinal-mode pulsed laser rather than the single longitudinal mode laser. Considering the Mie-Rayleigh scattering signals excited by the multi-longitudinal-mode laser have the periodic characteristics, the tunable MachZehnder interferometer is selected as the optical discriminator in the construction of multi-mode high-spectralresolution lidar. In order to minimize the effect of divergence angle on the transmittance function, a filedcompensated Mach-Zehnder interferometer is designed, which has the complementary outputs to realize the transmission and suppression of Mie scattering signals respectively. The optimal optical path difference of the MachZehnder interferometer should be twice of the cavity length of the Nd:YAG pulsed laser. The capability of the multimode high-spectral-resolution-lidar has been verified using the standard atmospheric model, the simulation results show that the proposed system can achieve the accurate measurement of aerosol optical properties up to 10km.

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Hengshuai Nan, Fei Gao, Bo Huang, Rui Zhang, Qingsong Zhu, Li Wang, and Dengxin Hua "Field-compensated tunable Mach-Zehnder interferometer for a multi-mode high-spectral-resolution lidar in the application of aerosol measurements", Proc. SPIE 10827, Sixth International Conference on Optical and Photonic Engineering (icOPEN 2018), 108272O (24 July 2018); https://doi.org/10.1117/12.2500403

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