Arm locking for the Laser Interferometer Space Antenna

P. G. Maghami; J. I. Thorpe; J. Livas

doi:10.1117/12.828195

11 August 2009 Arm locking for the Laser Interferometer Space Antenna

P. G. Maghami, J. I. Thorpe, J. Livas

Proceedings Volume 7466, Advanced Wavefront Control: Methods, Devices, and Applications VII; 74660M (2009) https://doi.org/10.1117/12.828195
Event: SPIE Optical Engineering + Applications, 2009, San Diego, California, United States

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.

Citation Download Citation

P. G. Maghami, J. I. Thorpe, and J. Livas "Arm locking for the Laser Interferometer Space Antenna", Proc. SPIE 7466, Advanced Wavefront Control: Methods, Devices, and Applications VII, 74660M (11 August 2009); https://doi.org/10.1117/12.828195

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