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Interferometric characterization and modeling of pathlength errors resulting from beamwalk across mirror surfaces in LISA

Kögel, Harald and Gerardi, Domenico and Pijnenburg, Joep and Gohlke, Martin and Schuldt, Thilo and Johann, Ulrich and Braxmaier, Claus and Weise, Dennis (2013) Interferometric characterization and modeling of pathlength errors resulting from beamwalk across mirror surfaces in LISA. Applied Optics, 52 (15), pp. 3516-3525. Optical Society of America. doi: 10.1364/AO.52.003516. ISSN 1559-128X.

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Official URL: http://ao.osa.org/abstract.cfm?URI=ao-52-15-3516


An alternative payload concept with in-field pointing for the laser interferometer space antenna utilizes an actuated mirror in the telescope for beam tracking to the distant satellite. This actuation generates optical pathlength variations due to the resulting beamwalk over the surface of subsequent optical components, which could possibly have a detrimental influence on the accuracy of the measurement instrument. We have experimentally characterized such pathlength errors caused by a λ/10 mirror surface and used the results to validate a theoretical model. This model is then applied to predict the impact of this effect for the current optical design of the LISA off-axis wide-field telescope.

Item URL in elib:https://elib.dlr.de/88135/
Document Type:Article
Title:Interferometric characterization and modeling of pathlength errors resulting from beamwalk across mirror surfaces in LISA
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Gerardi, DomenicoAstrium GmbH–Satellites, 88039 Friedrichshafen, GermanyUNSPECIFIEDUNSPECIFIED
Pijnenburg, Joep3TNO Opto Mechatronics, 2600 AD Delft, The NetherlandsUNSPECIFIEDUNSPECIFIED
Gohlke, MartinDLR-RY, Germany, 5Humboldt University, Department of Physics, 12489 Berlin, GermanyUNSPECIFIEDUNSPECIFIED
Schuldt, ThiloDLR- RY, Germany, 6University of Applied Sciences Konstanz, Institute for Optical Systems, 78462 Konstanz, GermanyUNSPECIFIEDUNSPECIFIED
Johann, UlrichAstrium GmbH–Satellites, Friedrichshafen, GermanyUNSPECIFIEDUNSPECIFIED
Braxmaier, ClausDLR-RY, ZARM, University of Bremen,1Astrium GmbH–Satellites, 88039 Friedrichshafen, GermanyUNSPECIFIEDUNSPECIFIED
Weise, DennisAstrium GmbH–Satellites, 88039 Friedrichshafen, GermanyUNSPECIFIEDUNSPECIFIED
Date:May 2013
Journal or Publication Title:Applied Optics
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
Page Range:pp. 3516-3525
Publisher:Optical Society of America
Keywords:Roughness; Surfaces
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Earth Observation
DLR - Research theme (Project):R - Vorhaben GRACE Follow-On (old)
Location: Bremen
Institutes and Institutions:Institute of Space Systems > Systems Enabling Technologies
Deposited By: Aguilera, Deborah
Deposited On:11 Feb 2014 11:31
Last Modified:10 Jan 2019 15:46

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