Role of fine structure energy exchange in Cs-N<sub>2</sub> system

LIU Jing; NIE Kunpu; YANG Jiao; WANG You; AN Guofei; DAI Kang

doi:10.7510/jgjs.issn.1001-3806.2022.05.021

LASER TECHNOLOGY > 2022 > 46(5): 702-707. > DOI: 10.7510/jgjs.issn.1001-3806.2022.05.021

LIU Jing, NIE Kunpu, YANG Jiao, WANG You, AN Guofei, DAI Kang. Role of fine structure energy exchange in Cs-N₂ system[J]. LASER TECHNOLOGY, 2022, 46(5): 702-707. DOI: 10.7510/jgjs.issn.1001-3806.2022.05.021

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Role of fine structure energy exchange in Cs-N₂ system

1.
School of Physical Science and Technology, Xinjiang University, Urumqi 830046, China
2.
Southwest Institute of Technical Physics, Chengdu 610041, China

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Received Date: July 19, 2021
Revised Date: September 05, 2021
Published Date: September 24, 2022

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Abstract

Abstract

In order to discuss the acceleration of energy exchange between fine structure energy levels of alkali atoms by buffer gas, the energy transfer process of fine structure collision in Cs(Rb)-N₂ system were investigated experimentally by laser induced fluorescence spectroscopy. The fluorescence data of D₁ and D₂ lines of alkali atoms were obtained under different conditions. The experimental results show that N₂ molecules are more involved in the acceleration of fine structure energy exchange in the Cs-N₂ system, and the system has a high fluorescence conversion efficiency at 340K. In the Rb-N₂ system, N₂ molecules mainly participate in the quenching process, and the gain effect on the fine structure collision is not obvious. The results can provide reference data for the efficient operation of the semiconductor pumped alkali laser.
- lasers,
- fine structure energy transfer,
- laser induced fluorescence spectroscopy,
- Cs-N₂ system,
- buffer gas,
- quenching

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Role of fine structure energy exchange in Cs-N₂ system