Alternative opto-mechanical architectures for the LISA instrument

Weise, Dennis; Marenaci, Pierangelo; Weimer, Peter; Schulte, Hans Reiner; Gath, Peter; Johann, Ulrich

doi:10.1088/1742-6596/154/1/012029

Cited by 17 publications

(20 citation statements)

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“…1). The passage of a gravitational wave causes minute fluctuations in the distance between the two proof masses of each arm, which are observed by heterodyne laser interferometry, that mutually links the three spacecraft in an active transponder scheme [1].…”

Section: Introductionmentioning

confidence: 99%

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Optical bench development for LISA

D'Arcio

Bogenstahl

Dehne

et al. 2017

International Conference on Space Optics — ICSO 2010

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For observation of gravitational waves at frequencies between 30 µHz and 1 Hz, the LISA mission will be implemented in a triangular constellation of three identical spacecraft, which are mutually linked by laser interferometry in an active transponder scheme over a 5 million kilometer arm length. On the end point of each laser link, remote and local beam metrology with respect to inertial proof masses inside the spacecraft is realized by the LISA Optical Bench. It implements furthermore various ancillary functions such as point-ahead correction, acquisition sensing, transmit beam conditioning, and laser redundancy switching.A comprehensive design of the Optical Bench has been developed, which includes all of the above mentioned functions and at the same time ensures manufacturability on the basis of hydroxide catalysis bonding, an ultrastable integration technology already perfected in the context of LISA's technology demonstrator mission LISA Pathfinder. Essential elements of this design have been validated by dedicated pre-investigations. These include the demonstration of polarizing heterodyne interferometry at the required Picometer and Nanoradian performance levels, the investigation of potential non-reciprocal noise sources in the so-called backlink fiber, as well as the development of a laser redundancy switch breadboard.

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Section: Introductionmentioning

confidence: 99%

“…It processes transmitted (TX) and received (RX) beam in opposite directions under a small point-ahead angle, required due to the non-negligible light travel time of approx. 16 s between the spacecraft [1].…”

Section: Introductionmentioning

confidence: 99%

Optical bench development for LISA

D'Arcio

Bogenstahl

Dehne

et al. 2017

International Conference on Space Optics — ICSO 2010

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“…The Optical Bench for NGO does also not include further ancillary metrology functions, which are installed on the LISA OB to demonstrate their compatibility with the system design, as means to improve performance robustness by mitigating a) potential pathlength noise generated within the telescope, using an Optical Truss [7], and b) excess pathlength noise from the PAAM, using an additional interferometer for PAAM Metrology. While the PAAM Metrology obviously is not applicable to NGO, since NGO does not utilize a PAAM, also the Optical Truss was removed from the system to enable a minimal Optical Bench diameter, and thus a significant reduction of the overall payload envelope.…”

Section: Icso 2012 International Conference On Space Opticsmentioning

confidence: 99%

An elegant Breadboard of the optical bench for eLISA/NGO

D'Arcio

Bogenstahl

Diekmann

et al. 2017

International Conference on Space Optics — ICSO 2012

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Abstract-The Laser Interferometer Space Antenna, as well as its reformulated European-only evolution, the New GravitationalWave Observatory, both employ heterodyne laser interferometry on million kilometer scale arm lengths in a triangular spacecraft formation, to observe gravitational waves at frequencies between 3 × 10 −5 Hz and 1 Hz. The Optical Bench as central payload element realizes both the inter-spacecraft as well as local laser metrology with respect to inertial proof masses, and provides further functions, such as point-ahead accommodation, acquisition sensing, transmit beam conditioning, optical power monitoring, and laser redundancy switching.These functions have been combined in a detailed design of an Optical Bench Elegant Breadboard, which is currently under assembly and integration. We present an overview of the realization and current performances of the Optical Bench subsystems, which employ ultraprecise piezo mechanism, ultrastable assembly techniques, and shot noise limited RF detection to achieve translation and tilt metrology at Picometer and Nanoradian noise levels.

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“…In space missions with high precision satellite-to-satellite laser interferometry for gravitational wave detection (LISA [1] / NGO [2]) or geodesy (NGGM [3] / GRACE FO [4]), these path length errors may cause a dominant error in the performance of the measurement instrument. The work presented in this paper was specifically motivated by an alternative payload concept with In-Field Pointing (IFP), as proposed by Astrium for the LISA space mission, see [5] and [6], whose interferometers require measurement accuracies of a few tens of a pm in the mHz range for detection of gravitational waves. The payload concept includes an actuated mirror in one of the telescope's pupil planes for beam tracking, shown in Figure 1, that will correct changes in the inter arm angle of the triangular satellite formation caused by their individual orbit dynamics.…”

Section: Introductionmentioning

confidence: 99%

Interferometric surface characterization of laser mirrors with sub-nanometer reproducibility for satellite-to-satellite optical metrology

Kögel¹,

Gohlke

Gerardi³

et al. 2017

International Conference on Space Optics — ICSO 2012

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Abstract-Path length errors caused by beamwalk over the surface topography of optical components can have a detrimental influence on the accuracy of highly sensitive translational metrology, that is of particular relevance for In-Field Pointing payload concepts, investigated for the LISA space mission. This paper presents the results of our experimental and theoretical investigations in surface induced path length errors with a detailed characterisation of their magnitudes.

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Alternative opto-mechanical architectures for the LISA instrument

Cited by 17 publications

References 0 publications

Optical bench development for LISA

Optical bench development for LISA

An elegant Breadboard of the optical bench for eLISA/NGO

Interferometric surface characterization of laser mirrors with sub-nanometer reproducibility for satellite-to-satellite optical metrology

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