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Cs 728 nm Laser Spectroscopy and Faraday Atomic Filter |
| LIU Zhong-Zheng1, TAO Zhi-Ming1,2, JIANG Zhao-Jie1, CHEN Jing-Biao1** |
1State Key Laboratory of Advanced Optical Communication System and Network, Institute of Quantum Electronics, School of Electronics Engineering & Computer Science, Peking University, Beijing 100871
2College of Science, Guizhou University of Engineering Science, Bijie 551700
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LIU Zhong-Zheng, TAO Zhi-Ming, JIANG Zhao-Jie et al 2014 Chin. Phys. Lett. 31 120602 |
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Abstract We mainly present the 728 nm laser spectroscopy and Faraday atomic filter of Cs atoms with 650 MHz linewidth and 2.6% transmission based on an electrodeless discharge vapor lamp, compared with Rb 728 nm laser spectroscopy. Accidentally, this remarkably strong Cs 728 nm transition from the 6F7/2 state to the 5D5/2 state is only about 2.5 GHz away from the Rb 728 nm transition of the future potential four-level active optical clock, once laser cooled and trapped from the 7S1/2 state to the 5P1/2 state, as we proposed previously. A Faraday atomic filter stabilized 728 nm laser using a Cs electrodeless discharge vapor lamp with a power of 10 mW will provide a frequency reference to evaluate the performance of the potential Rb four-level active optical clock at 728 nm with power less than 1 nW by 2.5 GHz heterodyne measurements.
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Published: 12 January 2015
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