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武汉大学学报 英文版 | Wuhan University Journal of Natural Sciences
Wan Fang
CNKI
CSCD
Wuhan University
Latest Article
Frequency Stabilization and Linewidth Narrowing with Modulation Transfer Spectroscopy
Time:2018-1-17  
ZHANG Xi1,2,3, LIU Hui1,2,3, JIANG Kunliang1,2,3, WANG Jinqi1,2,3, XIONG Zhuanxian1,2, HE Lingxiang1,2† , LÜ Baolong1,2
1. State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, Hubei, China; 2. Key Laboratory of Atomic Frequency Standards, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, Hubei, China; 3. School of Physics, University of Chinese Academy of Sciences, Beijing 100049, China
Abstract:
 We report laser frequency stabilization with modulation transfer spectroscopy (MTS) on 85Rb atoms. With both PZT (piezo-electric transducer) slow-loop feedback and current fast- loop feedback to the laser head, we get a linewidth narrowing less than 5 kHz simultaneously. Laser injection to a laser diode and frequency beating with another polarization spectroscopy based stabilization setup are also employed to check the narrow linewidth property. With the help of the technique, a linewidth around kHz-level laser is obtained and pave the way for the locking of the lattice laser of ytterbium clock with transfer cavity technique. The setup can be used as a frequency reference for precise frequency control of atomic clock system.
Key words: modulation transfer spectroscopy; frequency stabilization; linewidth; long-term drift
CLC number:O 433; O 562
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