Experimental study of CW CO2 lasers with wavelength tuning

Lijie Geng; Pengji Yan; Shuaifei Song; Zhenxiang Fu; Bingwen Wang; Liying Jiang; Ruiliang Zhang; Zhifeng Zhang; Kun Yang

doi:10.1117/12.3030527

3 June 2024 Experimental study of CW CO₂ lasers with wavelength tuning

Lijie Geng, Pengji Yan, Shuaifei Song, Zhenxiang Fu, Bingwen Wang, Liying Jiang, Ruiliang Zhang, Zhifeng Zhang, Kun Yang

Author Affiliations +

Proceedings Volume 13182, 2024 International Conference on Optoelectronic Information and Optical Engineering (OIOE 2024); 1318210 (2024) https://doi.org/10.1117/12.3030527
Event: 2024 International Conference on Optoelectronic Information and Optical Engineering (OIOE 2024), 2024, Kunming, China

Abstract

This paper presents a study on continuous wave tunable CO₂ lasers, which could be used in good pumping source of optically pumped gas THz laser. A series of comparative experiments to investigate the effects of cavity structure and discharge current on laser tunability and output power was conducted. The wavelength selection of CO₂ lasers primarily achieved by altering the angle of incidence of the blazing grating. Two enclosed CO₂ laser tubes were designed and customized, one was used for external cavity structure and the other was used for semi-external cavity structure research. Using the semi-external cavity structure, 78 lines was obtained at the range of 9-11μm, and achieved 60.7 W of laser output power at a wavelength of 10.59 μm. A beam quality factor of M² = 1.68 was measured using the traveling 90/10 knife-edge method.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Lijie Geng, Pengji Yan, Shuaifei Song, Zhenxiang Fu, Bingwen Wang, Liying Jiang, Ruiliang Zhang, Zhifeng Zhang, and Kun Yang "Experimental study of CW CO₂ lasers with wavelength tuning", Proc. SPIE 13182, 2024 International Conference on Optoelectronic Information and Optical Engineering (OIOE 2024), 1318210 (3 June 2024); https://doi.org/10.1117/12.3030527

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KEYWORDS

Gas lasers

Output couplers

Carbon dioxide lasers

Tunable lasers

Continuous wave operation

Transmittance

Laser applications

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