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A novel differential velocity modulation laser spectroscopy |
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| Authors: | Yuyan Liu Hui Gao Hongping Liu Chuanxi Duan Jieli Lin Yuanqing Guo Xiaoyong Liu Guangming Huang Jinrui Li Fengyan Li |
| Affiliation: | (1)State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics ,Wuhan 430071 ,China; (2)Department of Physics, East China Normal University ,Shanghai 200062 ,China; (3)Department of Physics, Huazhong Normal University ,Wuhan 430079 ,China; (4)Deparment of Physics, Wuhan University ,Wuhan 430072 ,China |
| Abstract: | Experimental investigation of a novel differential velocity modulation laser spectroscopy is reported and demonstrated with the spectra of n2+ A2Dm -X2óg+ Meinel system. The S/N ratio excesses 500· ·1, about 60 times higher than that with the traditional non-differential technique. With this technique, we obtained the high-resolution electronic absorption spectra of A2D-X2ó+ (1, 0) vibration-al band of CS+ for the first time. It is confirmed that this technique will be a powerful method and receive wide application in studies of new molecular ions. |
| Keywords: | velocity modulation differential technique molecular spectroscopy |
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