Experimental study of a new kind of gas-flowing diode pumped cesium laser

Guofei An; Jiao Yang; Jiawei Guo; He Cai; Kepeng Rong; You Wang

doi:10.1117/12.2656501

28 December 2022 Experimental study of a new kind of gas-flowing diode pumped cesium laser

Guofei An, Jiao Yang, Jiawei Guo, He Cai, Kepeng Rong, You Wang

Proceedings Volume 12310, Advanced Lasers, High-Power Lasers, and Applications XIII; 1231016 (2022) https://doi.org/10.1117/12.2656501
Event: SPIE/COS Photonics Asia, 2022, Online Only

Conference Poster

Abstract

A diode pumped alkali laser (DPAL) provides a significant potential for construction of high-powered lasers. To realize the scaling of a DPAL, heat management should be optimized. In this paper, a new kind of gas-flowing DPAL was proposed, in which a small cross-flow fan with diameter of 125 mm was set in the center of a cylindrical vapor cell whose diameter and thickness is 160 mm and 55 mm, respectively. The gain medium of cesium and the buffer gas of ethane were filled in the vapor cell with the total pressure is about 1 atmosphere. A mathematical model was constructed to systematically study the influence of the rotate speed on the internal temperature distribution and the output features of the laser. And then, the experimental study of the laser system was then carried out, in which the output laser at 894.3 nm with power of 32 W was obtained. The results show that both the velocity distribution and temperature distribution are greatly influenced by the rotate speed of the cross-flow fan, and then the heat generated from the DPAL can be took away efficiently, which is very important to the output performance of the laser system. These results indicate that this new type of gas-flowing DPAL might be a good choice for power scaling of DPALs.

Citation Download Citation

Guofei An, Jiao Yang, Jiawei Guo, He Cai, Kepeng Rong, and You Wang "Experimental study of a new kind of gas-flowing diode pumped cesium laser", Proc. SPIE 12310, Advanced Lasers, High-Power Lasers, and Applications XIII, 1231016 (28 December 2022); https://doi.org/10.1117/12.2656501

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