Frequency stabilization and linewidth narrowing with modulation transfer spectroscopy
Wuhan University Journal of Natural Sciences(2018)
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 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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关键词
modulation transfer spectroscopy, frequency stabilization, linewidth, long-term drift, O 433, O 562
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