12 January 2018 Analyses of absorption distribution of a rubidium cell side-pumped by a Laser-Diode-Array (LDA)
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A diode-pumped alkali laser (DPAL) has been regarded as one of the most potential candidates to achieve high power performances of next generation. In this paper, we investigate the physical properties of a rubidium cell side-pumped by a Laser-Diode-Array (LDA) in this study. As the saturated concentration of a gain medium inside a vapor cell is extremely sensitive to the temperature, the populations of every energy-level of the atomic alkali are strongly relying on the vapor temperature. Thus, the absorption characteristics of a DPAL are mainly dominated by the temperature distribution. In this paper, the temperature, absorption, and lasing distributions in the cross-section of a rubidium cell side-pumped by a LDA are obtained by means of a complicated mathematic procedure. Based on the original end-pumped mode we constructed before, a novel one-direction side-pumped theoretical mode has been established to explore the distribution properties in the transverse section of a rubidium vapor cell by combining the procedures of heat transfer and laser kinetics together. It has been thought the results might be helpful for design of a side-pumped configuration in a high-powered DPAL.
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Hang Yu, Hang Yu, Juhong Han, Juhong Han, Kepeng Rong, Kepeng Rong, Shunyan Wang, Shunyan Wang, He Cai, He Cai, Guofei An, Guofei An, Wei Zhang, Wei Zhang, Qiang Yu, Qiang Yu, Peng Wu, Peng Wu, Hongyuan Wang, Hongyuan Wang, You Wang, You Wang, "Analyses of absorption distribution of a rubidium cell side-pumped by a Laser-Diode-Array (LDA)", Proc. SPIE 10619, 2017 International Conference on Optical Instruments and Technology: Advanced Laser Technology and Applications, 106190W (12 January 2018); doi: 10.1117/12.2295582; https://doi.org/10.1117/12.2295582


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