Comparison Between Single-Longitudinal-Mode and Two-Longitudinal-Mode Pumping Cavity OPSMMWL |
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Authors: | Xiao Huang Yanxiang Bao Xizhang Luo and Xiaorong Zou |
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Institution: | (1) Dept. Electronics, Zhongshan University, Guangzhou, 510275, P.R.China |
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Abstract: | A CO2 infrared laser system with a etalon to be the longitudinal mode select equipment was set up to be the optically pump source, as well as a mini NH3 with 20cm long sample tube to be the sub-millimeter wave laser. CO2-9R(16) line was chose to pump the mini-NH3 SMMW laser, and 90.4um SMMW line was obtained by single-longtudinal-mode or two-longitudinal-mode pumping. Experimental comparison of output power and operating gas pressure between single and two-longitudinal-mode OPSMMWL were studied. It was found that the two-longitudinal-mode OPSMMWL could get higher output power and broader spectrum, existed a lower operating gas pressure and wider range of operating gas pressure. These experimental results verified the theoretical calculations before. |
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Keywords: | cavity OPSMMWL single-longtudinal-mode pumping two-longitudinal-mode pumping |
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