Design of a beam condense system with simple structure

Wanqi He; Chao Ma; Dengwei Zhang; Shuangliang Che; Xiaowu Shu; Huizhu Hu

doi:10.1117/12.2606517

24 November 2021 Design of a beam condense system with simple structure

Wanqi He, Chao Ma, Dengwei Zhang, Shuangliang Che, Xiaowu Shu, Huizhu Hu

Proceedings Volume 12065, AOPC 2021: Optical Sensing and Imaging Technology; 120652D (2021) https://doi.org/10.1117/12.2606517
Event: Applied Optics and Photonics China 2021, 2021, Beijing, China

Abstract

In order to detect weak magnetic field, the demonstration based on all-fiber full polarization Sagnac magnetic sensor was used in our scheme. Beam condense system(BCS) is very meaningful as one of the key technologies in this magnetic sensor. In the paper, we introduce a simple way to design a BCS. Because of the restriction of the system space, the BCS can’t take too much space. However, the common product of beam condense system is kind of complex and will take much space, these disadvantages can’t meet the application. We choose small lenses, design the simple workpiece by ourselves and coupling into our detection system. The workpiece including pressure rings and sleeves. In our plan, we choose telescope system as optical path. After passing the beam condense system, the diameter of beam can be smaller and reflect in magnetic-optical crystal (MOC) many times. In this way, the sensitivity of detection system can be magnified for about 11 times. Overall, the most obvious advantages of this beam condense system are simple structure, small space and low cost. There are two important parameters of beam condense system: The first is called condense ratio, which can be controlled by the choice of lenses. The second is called final beam diffusion angle, which depended on both the condense ratio and beam diffusion angle of collimating lens.

Citation Download Citation

Wanqi He, Chao Ma, Dengwei Zhang, Shuangliang Che, Xiaowu Shu, and Huizhu Hu "Design of a beam condense system with simple structure", Proc. SPIE 12065, AOPC 2021: Optical Sensing and Imaging Technology, 120652D (24 November 2021); https://doi.org/10.1117/12.2606517

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