@article{4544,
  author = {Nicholas Sampas and Dana Anderson},
  title = {Stabilization of laser beam alignment to an optical resonator by heterodyne detection of off-axis modes},
  year = {1990},
  journal = {Applied Optics},
  volume = {29},
  pages = {394},
  month = {1990-01},
  issn = {0003-6935},
  doi = {10.1364/AO.29.000394},
}