20 February 2018 Design and analysis of Fabry-Perot interferometer filter for high spectral resolution Lidar
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Abstract
A high-spectral-resolution lidar (HSRL) can measure vertical profiles of the aerosol backscatter ratio and the aerosol extinction coefficient simultaneously. Fabry-Perot (F-P) interferometer used as a spectrum filter can provide fine frequency resolution with an important impact on HSRL retrieval accuracy. However, in practical applications, the spectral characteristics of the interferometer are affected by many factors. In this article, the impact of several factors on F-P interferometer spectral properties, such as the temperature change, the beam divergence angle, the absorption loss, surface defects and non-parallelism of the interferometer, were analyzed in depth. The performances of F-P interference spectrum filters are modeled and simulated by analyzing the characteristics of lidar echo, respectively using Gaussian model and Bruneau model. Finally, designed the sandwich structure of F-P etalon encapsulation, and the finite element method is used for thermal analysis.
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Qian Deng, Qian Deng, Lu Li, Lu Li, Yufei Chu, Yufei Chu, DeCheng Wu, DeCheng Wu, Dong Liu, Dong Liu, } "Design and analysis of Fabry-Perot interferometer filter for high spectral resolution Lidar", Proc. SPIE 10697, Fourth Seminar on Novel Optoelectronic Detection Technology and Application, 106973X (20 February 2018); doi: 10.1117/12.2315494; https://doi.org/10.1117/12.2315494
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