The design method of beam splitting based on DOE and its application in 3D imaging Lidar

Chao Pan; Lianghai Li; Haiyi Cao; Yiming Zhao; Yuzhe Liu; Xuebing Dai

doi:10.1117/12.2651788

20 January 2023 The design method of beam splitting based on DOE and its application in 3D imaging Lidar

Chao Pan, Lianghai Li, Haiyi Cao, Yiming Zhao, Yuzhe Liu, Xuebing Dai

Proceedings Volume 12561, AOPC 2022: Atmospheric and Environmental Optics; 1256108 (2023) https://doi.org/10.1117/12.2651788
Event: Applied Optics and Photonics China 2022 (AOPC2022), 2022, Beijing, China

Abstract

In this paper, a factor reflecting the uniformity and the efficiency of grating beam splitting is introduced, moreover the scalar diffraction calculation method combined with the Gerchberg-Saxton iterative algorithm and the simulated annealing algorithm is proposed. Using this method, we iteratively obtain the optimal grating phase distribution by minimizing the factor, and a 16×4 beam splitting DOE with 86.3% efficiency and 92% uniformity is designed which has been successfully applied in 3-D imaging Lidar. The design method discussed in this paper provides new ideas for high-precision multi-beam Lidar and has better engineering application value.

Citation Download Citation

Chao Pan, Lianghai Li, Haiyi Cao, Yiming Zhao, Yuzhe Liu, and Xuebing Dai "The design method of beam splitting based on DOE and its application in 3D imaging Lidar", Proc. SPIE 12561, AOPC 2022: Atmospheric and Environmental Optics, 1256108 (20 January 2023); https://doi.org/10.1117/12.2651788

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