Measurement method of beam quality factor <i>β</i> for high energy laser

YIN Wanhong; DONG Zaitian; ZHANG Yunlong; WANG Wentao; LIU Lei; CHEN Haoyuan; DUAN Yuanyuan; WU Lei; LI Gaoping; YU Dongyu; WU Pei; YU Bing; SUN Pengcheng

doi:10.5768/JAO202445.0310007

Journal of Applied Optics > 2024 > 45(3): 537-542. > DOI: 10.5768/JAO202445.0310007

YIN Wanhong, DONG Zaitian, ZHANG Yunlong, WANG Wentao, LIU Lei, CHEN Haoyuan, DUAN Yuanyuan, WU Lei, LI Gaoping, YU Dongyu, WU Pei, YU Bing, SUN Pengcheng. Measurement method of beam quality factor β for high energy laser[J]. Journal of Applied Optics, 2024, 45(3): 537-542. DOI: 10.5768/JAO202445.0310007

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Measurement method of beam quality factor β for high energy laser

1.
Primary Optical Metrology Station of National Defense Science and Technology Industry, Xi'an Institute of Applied Optics, Xi'an 710065, China
2.
Key Laboratory of Solid-State Laser Technology, The 11th Research Institute of China Electronics Technology Group Corporation, Beijing 100020, China

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Received Date: December 25, 2022
Revised Date: October 24, 2023
Available Online: April 19, 2024

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Abstract

Abstract

The measurement system of high energy laser beam quality factor β is mainly used for state debugging and comprehensive performance parameters diagnosis of laser system, while these parameters can evaluate the laser output performance and the far-field spot focusing ability of the laser system. Aiming at the defect that the beam quality factor β close to the diffraction limit occupying too few pixels in the area array detectors, a measurement method was proposed based on microscopic magnification with high-precision scanning slit, and the relevant scheme was analyzed and calculated. In addition, a verification scheme of measurement results using the combination of fixed aberration elements and collimator light sources was designed to analyze the uncertainty of measuring device of developed high energy laser beam quality factor β, and the measurement uncertainty was better than 10%.
- high energy laser,
- β factor,
- measurement method,
- microscopic magnification,
- scanning slit

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References (15)

References

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Measurement method of beam quality factor β for high energy laser