Evaluation method for laser spot quality

Molei Hao; Jianfeng Bao; Jingjing Dai; Zhiyong Wang

doi:10.1117/12.2587500

2 December 2020 Evaluation method for laser spot quality

Molei Hao, Jianfeng Bao, Jingjing Dai, Zhiyong Wang

Proceedings Volume 11717, 24th National Laser Conference & Fifteenth National Conference on Laser Technology and Optoelectronics; 1171733 (2020) https://doi.org/10.1117/12.2587500
Event: 24th National Laser Conference & Fifteenth National Conference on Laser Technology and Optoelectronics, 2020, Shanghai, China

Abstract

In the field of laser engineering, various beam quality criterion has poor scalability, and the description of the laser spot is blurry. Most of the already published spot quality analyses focus on the uniformity of the laser spot, without considering the laser spot features. A generally applicable evaluation system has not been established. Follow standardization thinking, an ideal reference spot model was established, and an evaluation method of laser spot quality was proposed. With substituting simulation and experimental images into calculations, it is confirmed that this method can eliminate the interference from spot picture inherent attributes like the number of pixels, size, and luminance. This method makes the spots of various lasers measurable, especially be appropriate for evaluating semiconductor laser spot, multi-mode fiber spot where the beam quality is insufficient.

Citation Download Citation

Molei Hao, Jianfeng Bao, Jingjing Dai, and Zhiyong Wang "Evaluation method for laser spot quality", Proc. SPIE 11717, 24th National Laser Conference & Fifteenth National Conference on Laser Technology and Optoelectronics, 1171733 (2 December 2020); https://doi.org/10.1117/12.2587500

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