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Proceedings Paper

Arm locking for the Laser Interferometer Space Antenna
Author(s): P. G. Maghami; J. I. Thorpe; J. Livas
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Paper Abstract

The Laser Interferometer Space Antenna mission is a planned gravitational wave detector consisting of three spacecraft in heliocentric orbit. Laser interferometry is used to measure distance fluctuations between test masses aboard each spacecraft to the picometer level over a 5 million kilometer separation. Laser frequency fluctuations must be suppressed in order to meet the measurement requirements. Arm-locking, a technique that uses the constellation of spacecraft as a frequency reference, is a proposed method for stabilizing the laser frequency. We consider the problem of arm-locking using classical optimal control theory and find that our designs satisfy the LISA requirements.

Paper Details

Date Published: 11 August 2009
PDF: 11 pages
Proc. SPIE 7466, Advanced Wavefront Control: Methods, Devices, and Applications VII, 74660M (11 August 2009); doi: 10.1117/12.828195
Show Author Affiliations
P. G. Maghami, NASA Goddard Space Flight Ctr. (United States)
J. I. Thorpe, NASA Goddard Space Flight Ctr. (United States)
J. Livas, NASA Goddard Space Flight Ctr. (United States)


Published in SPIE Proceedings Vol. 7466:
Advanced Wavefront Control: Methods, Devices, and Applications VII
Richard A. Carreras; Troy A. Rhoadarmer; David C. Dayton, Editor(s)

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