Frequency stabilization and linewidth narrowing with modulation transfer spectroscopy |
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| Authors: | Xi Zhang Hui Liu Kunliang Jiang Jinqi Wang Zhuanxian Xiong Lingxiang He Baolong Lü |
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| Institution: | 1.State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics,Chinese Academy of Sciences,Hubei,China;2.Key Laboratory of Atomic Frequency Standards, Wuhan Institute of Physics and Mathematics,Chinese Academy of Sciences,Hubei,China;3.School of Physics,University of Chinese Academy of Sciences,Beijing,China |
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| 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 fastloop 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. |
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