Angular control of optical cavities in a radiation-pressure-dominated regime: the Enhanced LIGO case.

@article{Dooley2013AngularCO,
  title={Angular control of optical cavities in a radiation-pressure-dominated regime: the Enhanced LIGO case.},
  author={K. Dooley and L. Barsotti and R. Adhikari and Matthew Evans and T. Fricke and P. Fritschel and V. Frolov and K. Kawabe and N. Smith-Lefebvre},
  journal={Journal of the Optical Society of America. A, Optics, image science, and vision},
  year={2013},
  volume={30 12},
  pages={
          2618-26
        }
}
  • K. Dooley, L. Barsotti, +6 authors N. Smith-Lefebvre
  • Published 2013
  • Physics, Medicine
  • Journal of the Optical Society of America. A, Optics, image science, and vision
  • We describe the angular sensing and control (ASC) of 4 km detectors of the Laser Interferometer Gravitational-Wave Observatory (LIGO). Enhanced LIGO, the culmination of the first generation LIGO detectors, operated between 2009 and 2010 with about 40 kW of laser power in the arm cavities. In this regime, radiation-pressure effects are significant and induce instabilities in the angular opto-mechanical transfer functions. Here we present and motivate the ASC design in this extreme case and… CONTINUE READING
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