Dual-recycled cavity-enhanced Michelson interferometer for gravitational-wave detection

Guido Müller, Tom Delker, David B. Tanner, David Reitze
2003 Applied Optics  
The baseline design for an Advanced Laser Interferometer Gravitational-Wave Observatory ͑Advanced LIGO͒ is a dual-recycled Michelson interferometer with cavities in each of the Michelson interferometer arms. We describe one possible length-sensing and control scheme for such a dual-recycled, cavityenhanced Michelson interferometer. We discuss the principles of this scheme and derive the first-order sensing signals. We also present a successful experimental verification of our length-sensing
more » ... em using a prototype tabletop interferometer. Our results demonstrate the robustness of the scheme against deviations from the idealized design. We also identify potential weaknesses and discuss possible improvements. These results as well as other benchtop experiments that we present form the basis for a sensing and control scheme for Advanced LIGO.
doi:10.1364/ao.42.001257 pmid:12638883 fatcat:wqr7e6tgwffhxhazyqknaclfri