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  Coupling characterization and noise studies of the Optical Metrology System on-board the LISA Pathfinder Mission

Hechenblaikner, G., Gerndt, R., Johann, U., Luetzow-Wentzky, P., Wand, V., Audley, H., et al. (2010). Coupling characterization and noise studies of the Optical Metrology System on-board the LISA Pathfinder Mission. Applied Optics, 49(29), 5665-5677. doi:10.1364/AO.49.005665.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-000E-EB5C-C Version Permalink: http://hdl.handle.net/11858/00-001M-0000-000E-EB5E-8
Genre: Journal Article

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Hechenblaikner, G., Author
Gerndt, R., Author
Johann, U., Author
Luetzow-Wentzky, P., Author
Wand, V., Author
Audley, H., Author
Danzmann, K.1, Author              
Garcia-Marin, A., Author
Heinzel, G.1, Author              
Nofrarias, M.1, Author              
Steier, F.1, Author              
Affiliations:
1Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, ou_24010              

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Free keywords: Physics, Instrumentation and Detectors, physics.ins-det, Physics, Optics, physics.optics, Physics, Space Physics, physics.space-ph
 Abstract: In this article we describe the first investigations of the complete engineering model of the Optical Metrology System (OMS), a key subsystem of the LISA Pathfinder science mission to space. The latter itself is a technological precursor mission to LISA, a space-borne gravitational wave detector. At its core, the OMS consists of four heterodyne Mach Zehnder interferometers, a highly stable laser with external modulator and a phase-meter. It is designed to monitor and track the longitudinal motion and attitude of two floating test-masses in the optical reference frame with a (relative) precision in the picometer and nanorad range, respectively. We analyze sensor signal correlations and determine a physical sensor noise limit. The coupling parameters between motional degrees of freedom and interferometer signals are analytically derived and compared to measurements. We also measure adverse cross-coupling effects originating from system imperfections and limitations and describe algorithmic mitigation techniques to overcome some of them. Their impact on system performance is analyzed in the context of the Pathfinder mission.

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 Dates: 2010-06-102010
 Publication Status: Published in print
 Pages: 34
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: arXiv: 1006.2122
DOI: 10.1364/AO.49.005665
URI: http://arxiv.org/abs/1006.2122
 Degree: -

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Title: Applied Optics
Source Genre: Journal
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Publ. Info: Washington, DC : Optical Society of America
Pages: - Volume / Issue: 49 (29) Sequence Number: - Start / End Page: 5665 - 5677 Identifier: ISSN: 0003-6935
CoNE: /journals/resource/991042728167604