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Proceedings Paper

Field-compensated tunable Mach-Zehnder interferometer for a multi-mode high-spectral-resolution lidar in the application of aerosol measurements
Author(s): Hengshuai Nan; Fei Gao; Bo Huang; Rui Zhang; Qingsong Zhu; Li Wang; Dengxin Hua
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Paper 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.

Paper Details

Date Published: 24 July 2018
PDF: 6 pages
Proc. SPIE 10827, Sixth International Conference on Optical and Photonic Engineering (icOPEN 2018), 108272O (24 July 2018); doi: 10.1117/12.2500403
Show Author Affiliations
Hengshuai Nan, Xi'an Univ. of Technology (China)
Fei Gao, Xi'an Univ. of Technology (China)
Bo Huang, Xi'an Univ. of Technology (China)
Rui Zhang, Xi'an Univ. of Technology (China)
Qingsong Zhu, Xi'an Univ. of Technology (China)
Li Wang, Xi'an Univ. of Technology (China)
Dengxin Hua, Xi'an Univ. of Technology (China)

Published in SPIE Proceedings Vol. 10827:
Sixth International Conference on Optical and Photonic Engineering (icOPEN 2018)
Yingjie Yu; Chao Zuo; Kemao Qian, Editor(s)

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