Polarization-modulated optical pumping spectroscopy of Na D1 and D2 lines.

@article{Kim1989PolarizationmodulatedOP,
  title={Polarization-modulated optical pumping spectroscopy of Na D1 and D2 lines.},
  author={W Kim and Kyoungchul Kong and Lee},
  journal={Physical review. A, General physics},
  year={1989},
  volume={39 4},
  pages={2236-2238}
}