Laser Noise Stabilization, Processing, And Extraction Simulations For The Lisa Mission At The University Of Florida.

Details Laser Noise Stabilization, Processing, And Extraction Simulations For The Lisa Mission At The University Of Florida. Laser Noise Stabilization, Processing, And Extraction Simulations For The Lisa Mission At The University Of Florida.

May 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21833110y&link_type=abstract

American Astronomical Society, AAS Meeting #218, #331.10; Bulletin of the American Astronomical Society, Vol. 43, 2011

Computer Science

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The Laser Interferometer Space Antenna (LISA) Mission will strive to measure gravitational radiation in the frequency range from 1 Hz to 0.1 mHz from black hole mergers and other compact objects. Three spacecraft (SC) in a nearly equilateral triangular formation with an arm-length of 5.0 ± 0.025 Gm form the space-based interferometer. Differential length changes between free-floating proof-masses will be measured to an accuracy of 40 pm/√Hz using one-way laser phase measurements between lasers on adjacent SC. Accurately reconstructing the differential arm-length and extracting the gravitational wave signals from the photo-detector beatnotes depends on the performance of the laser pre-stabilization system, the ability of time-delay interferometry (TDI) to cancel the additional laser phase noise, the accuracy of the distance-ranging measurement between the SC, the sensitivity of the laser beatnote phase measurement, and the quality of the inter-SC clock transfers. The University of Florida Laser Interferometry Simulator (UFLIS) emulates the LISA interferometry using LISA-like laser noise sources, electronic replications of inter-SC laser phase delays, and µcycle/√Hz phase measurements of MHz-frequency laser beat-notes to test LISA interferometry. This work is supported by NASA Grant #NNX08AG75G.

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