24 October 2017 Investigations on the carbon contaminations on the alkali cells of DPAL with hydrocarbon buffer gas
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Proceedings Volume 10457, AOPC 2017: Laser Components, Systems, and Applications; 104570V (2017) https://doi.org/10.1117/12.2283254
Event: Applied Optics and Photonics China (AOPC2017), 2017, Beijing, China
Abstract
Diode pumped alkali laser (DPAL) with hydrocarbon buffer gases has the features of low threshold and high efficiency. The chemical reaction between alkali and hydrocarbon gases affects the life time of DPAL. In this paper, a method based on Fourier transform infrared spectroscopy and Lambert-Beer law is adopted to find a safe temperature at which DPAL runs for a long term. A theoretical model is established to figure out ways to reduce the peak temperature in the cell window. The results indicates that 170 °C is a safe temperature. Although the absorbance of the cell window to the pump light and alkali laser is lower, there is temperature increase. Small light-transmitting area and air blowing on the windows can reduce the peak temperature effectively. Cooling the cell window is essential and critical in a long-term running DPAL.
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Zhiyong Li, Zhiyong Li, Rongqing Tan, Rongqing Tan, Yujie Wang, Yujie Wang, Qing Ye, Qing Ye, Jintian Bian, Jintian Bian, Wei Huang, Wei Huang, Hui Li, Hui Li, Gaoce Han, Gaoce Han, } "Investigations on the carbon contaminations on the alkali cells of DPAL with hydrocarbon buffer gas", Proc. SPIE 10457, AOPC 2017: Laser Components, Systems, and Applications, 104570V (24 October 2017); doi: 10.1117/12.2283254; https://doi.org/10.1117/12.2283254
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