Design and analysis of coaxial optical system for long-distance laser ranging

Fei Huang; Hao Zhang; Shuo Zhang; Tianqi Li; Jingzhen Mu; Guicun Li; Shuqing Cao; Zongming Liu

doi:10.1117/12.2666427

4 April 2023 Design and analysis of coaxial optical system for long-distance laser ranging

Fei Huang, Hao Zhang, Shuo Zhang, Tianqi Li, Jingzhen Mu, Guicun Li, Shuqing Cao, Zongming Liu

Proceedings Volume 12617, Ninth Symposium on Novel Photoelectronic Detection Technology and Applications; 1261750 (2023) https://doi.org/10.1117/12.2666427
Event: 9th Symposium on Novel Photoelectronic Detection Technology and Applications (NDTA 2022), 2022, Hefei, China

Abstract

Laser collimation beam expanding systems improve the collimation of the beam by improving the spatial divergence angle of the laser beam and have important applications in laser ranging, aerospace, rail transportation and intelligent manufacturing. In order to meet the needs of 100 meters laser ranging, a set of coaxial optical system for receiving and sending has been designed in this paper. The system is mainly composed of fiber collimator and Galileo beam expanding system. Based on the transformation theory of Gaussian beam through thin lens and ZEMAX software, simulation and analysis are carried out. At the same time, the relations of the exit beam waist position and diameter with the distance between the lenses as well as the size changes of the returned beam spot with the measured distance are further analyzed. The results show that the coaxial system for receiving and sending can meet needs of 100 meters laser ranging, which can decrease the size of optical elements and has the advantages of simple structure and compactness compared with the common expanding system of minimum divergence angle. It can provide a more accurate reference for the collimation and expanding operation part in related scientific research and engineering practice activities.

Citation Download Citation

Fei Huang, Hao Zhang, Shuo Zhang, Tianqi Li, Jingzhen Mu, Guicun Li, Shuqing Cao, and Zongming Liu "Design and analysis of coaxial optical system for long-distance laser ranging", Proc. SPIE 12617, Ninth Symposium on Novel Photoelectronic Detection Technology and Applications, 1261750 (4 April 2023); https://doi.org/10.1117/12.2666427

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KEYWORDS

Gaussian beams

Beam diameter

Lenses

Objectives

Design and modelling

Mirrors

Beam divergence

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