Lasers, Fiber Optics, and Communications

Comparative study of diode-pumped alkali vapor laser and exciplex-pumped alkali laser systems and selection principal of parameters

[+] Author Affiliations
Wei Huang, Rongqing Tan, Gaoce Han, Hui Li

Chinese Academy of Sciences, Institute of Electronics, Department of High Power Gas Laser, Beijing, China

University of Chinese Academy of Sciences, School of Electronic, Electrical and Communication Engineering, Beijing, China

Zhiyong Li

Chinese Academy of Sciences, Institute of Electronics, Department of High Power Gas Laser, Beijing, China

Electronic Engineering Institute, State Key Laboratory of Pulsed Power Laser Technology, Hefei, Anhui, China

Opt. Eng. 56(3), 036112 (Mar 23, 2017). doi:10.1117/1.OE.56.3.036112
History: Received January 6, 2017; Accepted March 9, 2017
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Abstract.  A theoretical model based on common pump structure is proposed to analyze the output characteristics of a diode-pumped alkali vapor laser (DPAL) and XPAL (exciplex-pumped alkali laser). Cs-DPAL and Cs-Ar XPAL systems are used as examples. The model predicts that an optical-to-optical efficiency approaching 80% can be achieved for continuous-wave four- and five-level XPAL systems with broadband pumping, which is several times the pumped linewidth for DPAL. Operation parameters including pumped intensity, temperature, cell’s length, mixed gas concentration, pumped linewidth, and output coupler are analyzed for DPAL and XPAL systems based on the kinetic model. In addition, the predictions of selection principal of temperature and cell’s length are also presented. The concept of the equivalent “alkali areal density” is proposed. The result shows that the output characteristics with the same alkali areal density but different temperatures turn out to be equal for either the DPAL or the XPAL system. It is the areal density that reflects the potential of DPAL or XPAL systems directly. A more detailed analysis of similar influences of cavity parameters with the same areal density is also presented.

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© 2017 Society of Photo-Optical Instrumentation Engineers

Citation

Wei Huang ; Rongqing Tan ; Zhiyong Li ; Gaoce Han and Hui Li
"Comparative study of diode-pumped alkali vapor laser and exciplex-pumped alkali laser systems and selection principal of parameters", Opt. Eng. 56(3), 036112 (Mar 23, 2017). ; http://dx.doi.org/10.1117/1.OE.56.3.036112


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