Frequency Stabilization and Linewidth Narrowing with Modulation Transfer Spectro

2018年第1期

关键词:
modulation transfer spectroscopy;frequen

Keywords
modulation transfer spectroscopy;frequency stabilization;linewidth;long-term drift
摘要
     We report laser frequency stabilization with modulation transfer spectroscopy(MTS) on 85 Rb 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 k Hz 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 k Hz-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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