Evaluation and characterization method of laser spot for all-angle directions

Sibo Zhang; Yirui Huang; Fei Wang; Chengshuang Zhang; YanLing Bao; Zhongmin Su

doi:10.1117/12.2601292

24 November 2021 Evaluation and characterization method of laser spot for all-angle directions

Sibo Zhang, Yirui Huang, Fei Wang, Chengshuang Zhang, YanLing Bao, Zhongmin Su

Proceedings Volume 12065, AOPC 2021: Optical Sensing and Imaging Technology; 1206508 (2021) https://doi.org/10.1117/12.2601292
Event: Applied Optics and Photonics China 2021, 2021, Beijing, China

Abstract

An all-angle directions (AAD) evaluation method of laser spot is presented in the paper. The mathematical model for calculating the spot size at any angle is established firstly. Then, laser spot width of multiple typical angles is measured by the AAD evaluation method. Compared with the result of the traditional measurement in the horizontal and vertical directions through mechanical rotation, the differences are less than 0.15%. The differences in pixel points between the profile of the spot drawn by the laser spot obtained at different rotation angles on the detection surface are all less than 2.28%. The method can fully reflect the asymmetrical distribution of the laser spot without moving the equipment or the laser source, and avoid the influence of mechanical errors.

Citation Download Citation

Sibo Zhang, Yirui Huang, Fei Wang, Chengshuang Zhang, YanLing Bao, and Zhongmin Su "Evaluation and characterization method of laser spot for all-angle directions", Proc. SPIE 12065, AOPC 2021: Optical Sensing and Imaging Technology, 1206508 (24 November 2021); https://doi.org/10.1117/12.2601292

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