Magnetic-enhanced modulation transfer spectroscopy and laser locking for 87Rb repump transition.

  title={Magnetic-enhanced modulation transfer spectroscopy and laser locking for 87Rb repump transition.},
  author={J B Long and Sheng Yang and Shuai Chen and Jian-Wei Pan},
  journal={Optics express},
  volume={26 21},
Locking of a laser frequency to an atomic or molecular resonance line is a key technique in applications of laser spectroscopy and atomic metrology. Modulation transfer spectroscopy (MTS) provides an accurate and stable laser locking method which has been widely used. Normally, the frequency of the MTS signal would drift due to Zeeman shift of the atomic levels and rigorous shielding of stray magnetic field around the vapor cell is required for the accuracy and stability of laser locking. Here… 

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