Discussion on Applying β Factor in the Evaluation of Beam Quality of the Passive Coherent Beam Combination System

Zhen, 李震 Li; Jun, 周军 Zhou; Yuhao, 薛宇豪 Xue; Bing, 何兵 He; Liu, Chi; Yunfeng, 漆云凤 Qi; Jingxing, 董景星 Dong; Yunrong, 魏运荣 Wei; Qihong, 楼祺洪 Lou; Zhiyong, 潘志勇 Pan

doi:10.3788/cjl201138.1102012

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2024

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“…The β factor of beam quality reflects the actual energy transmission efficiency and focusing ability of the laser beam, remaining constant through ideal optical system transformations and fundamentally representing beam quality. The use of the β factor to assess the beam quality of high-power lasers has become a trend, considered an ideal and practical parameter for beam quality evaluation [1,3,4,[6][7][8][9][10][11][12][13] .…”

Section: Introductionmentioning

confidence: 99%

Study on the effects of truncation on the measurement of the beam quality β factor in Gaussian beam

YUAN,

Hou,

Wang

et al. 2024

International Conference on Optics and Machine Vision (ICOMV 2024)

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This study investigates the influence of truncation on the beam quality β factor measurement in Gaussian beams. Employing an annular energy approach, the paper analyzes the β method for calculating beam width's half-radius. Different truncation ratios of Gaussian beams are considered, deriving coefficients for precise β factor calculation. A critical truncation ratio is identified, beyond which diffraction effects are minimal, offering insights into beam measurement and production processes. This study provides key data and in-depth analysis for understanding and analyzing the beam quality β-factor of Gaussian beams induced by the truncation effect, thus laying the foundation for further research on the beam quality β-factor.

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