Chinese Optics Letters, 2017, 15 (11): 111401, Published Online: Jul. 19, 2018   

Population inversion in sodium D2 transition based on sodium-ethane excimer pairs

Author Affiliations
1 Key Laboratory of Chemical Lasers, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
2 University of Chinese Academy of Sciences, Beijing 100049, China
Abstract
Sodium-ethane excimer pairs are studied and proved to be a great choice of excimer pumped sodium laser (XPNaL) gain media. The lifetime of the sodium D2 line is studied in a sodium-ethane excimer system excited by a 553 nm laser, and the observed phenomenon of lifetime lengthening is discussed. Amplified spontaneous emission (ASE) of the sodium D2 line is successfully obtained, and its time-resolved and spectroscopic characteristics are studied experimentally. According to the intensity of the ASE signal under different sodium vapor atom densities, the sodium D2 line gain feature of sodium-ethane excimer pairs excited by the 553 nm laser is concluded.

Shu Hu, Baodong Gai, Jingwei Guo, Pengyuan Wang, Xueyang Li, Hui Li, Jinbo Liu, Shan He, Xianglong Cai, Dong Liu, Ying Chen, Fengting Sang, Yuqi Jin. Population inversion in sodium D2 transition based on sodium-ethane excimer pairs[J]. Chinese Optics Letters, 2017, 15(11): 111401.

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