Ring-laser tests of fundamental physics and geophysics

@article{Stedman1997RinglaserTO,
  title={Ring-laser tests of fundamental physics and geophysics},
  author={G. Stedman},
  journal={Reports on Progress in Physics},
  year={1997},
  volume={60},
  pages={615-688}
}
  • G. Stedman
  • Published 1997
  • Physics
  • Reports on Progress in Physics
  • HeNe ring-laser gyros are standard sensors in inertial guidance; mirror reflectances now reach 99.9999%. Present research instruments have an area of , a passive quality factor of , and a resolution of the frequency difference of counter-rotating optical beams approaching microhertz. In the Sagnac effect, this difference is proportional to the angular velocity. Present resolution is limited by thermal drifts in frequency pulling, itself reflecting mirror backscatter. The capability of ring… CONTINUE READING
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