| ATOMIC AND MOLECULAR PHYSICS |
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Velocity Transfer Spectroscopy of Rb 420 nm Transition |
| ZHANG Li-Guo1, LIU Zhong-Zheng1, TAO Zhi-Ming1,2, LING Li1,3, CHEN Jing-Biao1** |
1State Key Laboratory of Advanced Optical Communication System and Network, Institute of Quantum Electronics, School of Electronics Engineering and Computer Science, Peking University, Beijing 100871
2Department of Physics, Bijie University, Bijie 551700
3Institute of Information and Electronics, Zhejiang University City College, Hangzhou 310015
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| Cite this article: |
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ZHANG Li-Guo, LIU Zhong-Zheng, TAO Zhi-Ming et al 2014 Chin. Phys. Lett. 31 083101 |
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Abstract We propose and demonstrate the velocity transfer spectroscopy of a V-type energy structure with Rb atoms at 420 nm transition. The weak oscillator strength of a lower excited state for V-type energy structure atoms limits the high signal-to-noise ratio of atomic laser spectroscopy, which can be usually realized by optical-optical double-resonance or double-resonance optical pumping for cascade-type energy structure atoms. For 87Rb atoms, the weak 420 nm transition spectrum between the energy level of 52S1/2 and 62P3/2 is transferred to the spectrum on lower excited states at 780 nm with strong oscillator strength, which is recorded by a 780 nm probe laser. This method, which is similar to the electron-shelving detection method, at a certain degree can indirectly measure a higher excited state transition with weak oscillator strength for any V-type energy structure of atoms by transferring the transition spectrum information of the very weak oscillator strength to the strong oscillator strength in an optical-optical double-resonance configuration.
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| PACS: |
31.70.-f
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(Effects of atomic and molecular interactions on electronic structure)
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32.30.Jc
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(Visible and ultraviolet spectra)
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32.70.Cs
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(Oscillator strengths, lifetimes, transition moments)
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