Hardware Verification of Time Delay Interferometry with Space-craft Motion Effects for Space-based Gravitational Wave Interferometers.

Details Hardware Verification of Time Delay Interferometry with Space-craft Motion Effects for Space-based Gravitational Wave Interferometers. Hardware Verification of Time Delay Interferometry with Space-craft Motion Effects for Space-based Gravitational Wave Interferometers.

Jan 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21914612m&link_type=abstract

American Astronomical Society, AAS Meeting #219, #146.12

Astronomy and Astrophysics

Astronomy

Scientific paper

The detection of gravitational waves (GWs) with the use of future space-based interferometer missions, such as the Next Gravitational Wave Observatory (NGO), will require advanced interferometry schemes in order to account for unequal arm-lengths and space-craft motion effects. These complications are resolved using measurements of one-way laser observables and post-processing combinations which cancel the laser noise and extract the differential arm-length, collectively, referred to as Time Delay Interferometry (TDI). The University of Florida (UF) has constructed a hardware-in-the-loop experiment, know as the UF Laser Interferometry Simulator (UFLIS), to replicate the pre-stabilized laser noise, multi-second light travel time delays, GW laser-phase modulation, and the formation and measurement of photodetector laser beatnotes using a microcycle phasemeter as is expected in these space-based interferometers. The measurements are then combined using the TDI combinations to verify the interferometer sensitivity after laser noise cancellation.

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