Spectral radiation drift behavior of near-infrared laser by the complete hemispherical reflection method

G. Y. Liu; K. W. Huan; B. L. An; Y. L. Zhao; X. Y. Song; W. Dong; B. K. Wang; Z. D. Yuan

doi:10.1117/12.2651907

20 January 2023 Spectral radiation drift behavior of near-infrared laser by the complete hemispherical reflection method

G. Y. Liu, K. W. Huan, B. L. An, Y. L. Zhao, X. Y. Song, W. Dong, B. K. Wang, Z. D. Yuan

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Proceedings Volume 12555, AOPC 2022: Infrared Devices and Infrared Technology; and Terahertz Technology and Applications; 125550N (2023) https://doi.org/10.1117/12.2651907
Event: Applied Optics and Photonics China 2022 (AOPC2022), 2022, Beijing, China

Abstract

In the experiment of measuring the emissivity distribution characteristics by integrating sphere reflection method, the laser output power stability is an important guarantee for the accurate emissivity measurement. However, there is a lack of research on the influence of laser power stability on measurement results. Therefore, a measurement system for the infrared radiation source emissivity distribution characteristics is designed and built based on the complete hemispherical laser integrated reflection scheme in this paper. The stability of the laser light source subsystem is evaluated, and the laser power drift is corrected by means of a alternating measurement sequence. The experiment of measuring the flat plate radiation source emissivity distribution characteristics is carried out with a laser power of 3 W. The results show that the laser power shows a periodic drift and one period is about 70 s. The macroscopic power of the laser increases linearly throughout the measurement process. After correcting the laser power drift, the relative standard deviation of the flat plate radiation source is 0.56%, and the volatility is 2.99%. After drift correction, the measurement accuracy is improved by 28.2%.

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G. Y. Liu, K. W. Huan, B. L. An, Y. L. Zhao, X. Y. Song, W. Dong, B. K. Wang, and Z. D. Yuan "Spectral radiation drift behavior of near-infrared laser by the complete hemispherical reflection method", Proc. SPIE 12555, AOPC 2022: Infrared Devices and Infrared Technology; and Terahertz Technology and Applications, 125550N (20 January 2023); https://doi.org/10.1117/12.2651907

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KEYWORDS

Laser stabilization

Light sources

Gold

Integrating spheres

Laser applications

Fiber lasers

Infrared radiation

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