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<button class="button is-small is-link">Go</button> </div> </div> </form> </div> </div> <ol class="breathe-horizontal" start="1"> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1709.02385">arXiv:1709.02385</a> <span> [<a href="https://arxiv.org/pdf/1709.02385">pdf</a>, <a href="https://arxiv.org/format/1709.02385">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Optics">physics.optics</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/1361-6382/aaa276">10.1088/1361-6382/aaa276 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Sub-pm/$\mathrm{\mathbf{\sqrt{\rm Hz}}}$ non-reciprocal noise in the LISA backlink fiber </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Fleddermann%2C+R">Roland Fleddermann</a>, <a href="/search/physics?searchtype=author&query=Diekmann%2C+C">Christian Diekmann</a>, <a href="/search/physics?searchtype=author&query=Steier%2C+F">Frank Steier</a>, <a href="/search/physics?searchtype=author&query=Tr%C3%B6bs%2C+M">Michael Tr枚bs</a>, <a href="/search/physics?searchtype=author&query=Heinzel%2C+G">Gerhard Heinzel</a>, <a href="/search/physics?searchtype=author&query=Danzmann%2C+K">Karsten Danzmann</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1709.02385v3-abstract-short" style="display: inline;"> The future space-based gravitational wave detector Laser Interferometer Space Antenna (LISA) requires bidirectional exchange of light between its two optical benches on board of each of its three satellites. The current baseline foresees a polarization-maintaining single-mode fiber for this backlink connection. Phase changes which are common in both directions do not enter the science measurement,… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1709.02385v3-abstract-full').style.display = 'inline'; document.getElementById('1709.02385v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1709.02385v3-abstract-full" style="display: none;"> The future space-based gravitational wave detector Laser Interferometer Space Antenna (LISA) requires bidirectional exchange of light between its two optical benches on board of each of its three satellites. The current baseline foresees a polarization-maintaining single-mode fiber for this backlink connection. Phase changes which are common in both directions do not enter the science measurement, but differential ("non-reciprocal") phase fluctuations directly do and must thus be guaranteed to be small enough. We have built a setup consisting of a Zerodur$^{\rm TM}$ baseplate with fused silica components attached to it using hydroxide-catalysis bonding and demonstrated the reciprocity of a polarization-maintaining single-mode fiber at the 1 pm/$\sqrt{\textrm{Hz}}$ level as is required for LISA. We used balanced detection to reduce the influence of parasitic optical beams on the reciprocity measurement and a fiber length stabilization to avoid nonlinear effects in our phase measurement system (phase meter). For LISA, a different phase meter is planned to be used that does not show this nonlinearity. We corrected the influence of beam angle changes and temperature changes on the reciprocity measurement in post-processing. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1709.02385v3-abstract-full').style.display = 'none'; document.getElementById('1709.02385v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 25 September, 2017; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 7 September, 2017; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2017. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1205.4544">arXiv:1205.4544</a> <span> [<a href="https://arxiv.org/pdf/1205.4544">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Optics">physics.optics</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1109/JQE.2011.2108637">10.1109/JQE.2011.2108637 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Digital laser frequency control and phase stabilization loops for a high precision space-borne metrology system </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Hechenblaikner%2C+G">Gerald Hechenblaikner</a>, <a href="/search/physics?searchtype=author&query=Wand%2C+V">Vinzenz Wand</a>, <a href="/search/physics?searchtype=author&query=Kersten%2C+M">Michael Kersten</a>, <a href="/search/physics?searchtype=author&query=Danzmann%2C+K">Karsten Danzmann</a>, <a href="/search/physics?searchtype=author&query=Garcia%2C+A">Antonio Garcia</a>, <a href="/search/physics?searchtype=author&query=Heinzel%2C+G">Gerhard Heinzel</a>, <a href="/search/physics?searchtype=author&query=Nofrarias%2C+M">Miquel Nofrarias</a>, <a href="/search/physics?searchtype=author&query=Steier%2C+F">Frank Steier</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1205.4544v1-abstract-short" style="display: inline;"> We report on the design, implementation and characterization of fully digital control loops for laser frequency stabilization, differential phase-locking and performance optimization of the optical metrology system on-board the LISA Pathfinder space mission. The optical metrology system consists of a laser with modulator, four Mach-Zehnder interferometers, a phase-meter and a digital processing un… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1205.4544v1-abstract-full').style.display = 'inline'; document.getElementById('1205.4544v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1205.4544v1-abstract-full" style="display: none;"> We report on the design, implementation and characterization of fully digital control loops for laser frequency stabilization, differential phase-locking and performance optimization of the optical metrology system on-board the LISA Pathfinder space mission. The optical metrology system consists of a laser with modulator, four Mach-Zehnder interferometers, a phase-meter and a digital processing unit for data analysis. The digital loop design has the advantage of easy and flexible controller implementation and loop calibration, automated and flexible locking and resetting, and improved performance over analogue circuitry. Using the practical ability of our system to modulate the laser frequency allows us to accurately determine the open loop transfer function and other system properties. Various noise sources and their impact on system performance are investigated in detail. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1205.4544v1-abstract-full').style.display = 'none'; document.getElementById('1205.4544v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 21 May, 2012; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2012. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">10 pages, 7 figures; draft only, for edited version see journal link</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> IEEE Journal of Quantum Electronics, Vol. 47, No. 5, p.p. 651 (2011) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1203.4842">arXiv:1203.4842</a> <span> [<a href="https://arxiv.org/pdf/1203.4842">pdf</a>, <a href="https://arxiv.org/format/1203.4842">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="General Relativity and Quantum Cosmology">gr-qc</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Methods for Astrophysics">astro-ph.IM</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Optics">physics.optics</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Space Physics">physics.space-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/0264-9381/26/9/094010">10.1088/0264-9381/26/9/094010 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> The end-to-end testbed of the Optical Metrology System on-board LISA Pathfinder </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Steier%2C+F">Frank Steier</a>, <a href="/search/physics?searchtype=author&query=Cervantes%2C+F+G">Felipe Guzm谩n Cervantes</a>, <a href="/search/physics?searchtype=author&query=Mar%C3%ADn%2C+A+F+G">Antonio F. Garc铆a Mar铆n</a>, <a href="/search/physics?searchtype=author&query=Gerardi%2C+D">Domenico Gerardi</a>, <a href="/search/physics?searchtype=author&query=Heinzel%2C+G">Gerhard Heinzel</a>, <a href="/search/physics?searchtype=author&query=Danzmann%2C+K">Karsten Danzmann</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1203.4842v1-abstract-short" style="display: inline;"> LISA Pathfinder is a technology demonstration mission for the Laser Interferometer Space Antenna (LISA). The main experiment on-board LISA Pathfinder is the so-called LISA Technology Package (LTP) which has the aim to measure the differential acceleration between two free-falling test masses with an accuracy of 3x10^(-14) ms^(-2)/sqrt[Hz] between 1 mHz and 30 mHz. This measurement is performed int… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1203.4842v1-abstract-full').style.display = 'inline'; document.getElementById('1203.4842v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1203.4842v1-abstract-full" style="display: none;"> LISA Pathfinder is a technology demonstration mission for the Laser Interferometer Space Antenna (LISA). The main experiment on-board LISA Pathfinder is the so-called LISA Technology Package (LTP) which has the aim to measure the differential acceleration between two free-falling test masses with an accuracy of 3x10^(-14) ms^(-2)/sqrt[Hz] between 1 mHz and 30 mHz. This measurement is performed interferometrically by the Optical Metrology System (OMS) on-board LISA Pathfinder. In this paper we present the development of an experimental end-to-end testbed of the entire OMS. It includes the interferometer and its sub-units, the interferometer back-end which is a phasemeter and the processing of the phasemeter output data. Furthermore, 3-axes piezo actuated mirrors are used instead of the free-falling test masses for the characterisation of the dynamic behaviour of the system and some parts of the Drag-free and Attitude Control System (DFACS) which controls the test masses and the satellite. The end-to-end testbed includes all parts of the LTP that can reasonably be tested on earth without free-falling test masses. At its present status it consists mainly of breadboard components. Some of those have already been replaced by Engineering Models of the LTP experiment. In the next steps, further Engineering Models and Flight Models will also be inserted in this testbed and tested against well characterised breadboard components. The presented testbed is an important reference for the unit tests and can also be used for validation of the on-board experiment during the mission. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1203.4842v1-abstract-full').style.display = 'none'; document.getElementById('1203.4842v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 21 March, 2012; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2012. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Classical and Quantum Gravity 26 094010 (2009) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1203.4478">arXiv:1203.4478</a> <span> [<a href="https://arxiv.org/pdf/1203.4478">pdf</a>, <a href="https://arxiv.org/format/1203.4478">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Optics">physics.optics</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Methods for Astrophysics">astro-ph.IM</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="General Relativity and Quantum Cosmology">gr-qc</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Space Physics">physics.space-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1364/AO.46.004541">10.1364/AO.46.004541 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Real-time phasefront detector for heterodyne interferometers </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Cervantes%2C+F+G">Felipe Guzm谩n Cervantes</a>, <a href="/search/physics?searchtype=author&query=Heinzel%2C+G">Gerhard Heinzel</a>, <a href="/search/physics?searchtype=author&query=Mar%C3%ADn%2C+A+F+G">Antonio F. Garc铆a Mar铆n</a>, <a href="/search/physics?searchtype=author&query=Wand%2C+V">Vinzenz Wand</a>, <a href="/search/physics?searchtype=author&query=Steier%2C+F">Frank Steier</a>, <a href="/search/physics?searchtype=author&query=Jennrich%2C+O">Oliver Jennrich</a>, <a href="/search/physics?searchtype=author&query=Danzmann%2C+K">Karsten Danzmann</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1203.4478v1-abstract-short" style="display: inline;"> We present a real-time differential phasefront detector sensitive to better than 3 mrad rms, which corresponds to a precision of about 500 pm. This detector performs a spatially resolving measurement of the phasefront of a heterodyne interferometer, with heterodyne frequencies up to approximately 10 kHz. This instrument was developed as part of the research for the LISA Technology Package (LTP) in… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1203.4478v1-abstract-full').style.display = 'inline'; document.getElementById('1203.4478v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1203.4478v1-abstract-full" style="display: none;"> We present a real-time differential phasefront detector sensitive to better than 3 mrad rms, which corresponds to a precision of about 500 pm. This detector performs a spatially resolving measurement of the phasefront of a heterodyne interferometer, with heterodyne frequencies up to approximately 10 kHz. This instrument was developed as part of the research for the LISA Technology Package (LTP) interferometer, and will assist in the manufacture of its flight model. Due to the advantages this instrument offers, it also has general applications in optical metrology. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1203.4478v1-abstract-full').style.display = 'none'; document.getElementById('1203.4478v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 20 March, 2012; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2012. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Applied Optics, Vol. 46, Issue 21, pp. 4541-4548 (2007) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1203.4476">arXiv:1203.4476</a> <span> [<a href="https://arxiv.org/pdf/1203.4476">pdf</a>, <a href="https://arxiv.org/format/1203.4476">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Methods for Astrophysics">astro-ph.IM</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="General Relativity and Quantum Cosmology">gr-qc</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Optics">physics.optics</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Space Physics">physics.space-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1007/s00340-007-2923-0">10.1007/s00340-007-2923-0 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Subtraction of test mass angular noise in the LISA Technology Package interferometer </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Cervantes%2C+F+G">Felipe Guzm谩n Cervantes</a>, <a href="/search/physics?searchtype=author&query=Steier%2C+F">Frank Steier</a>, <a href="/search/physics?searchtype=author&query=Wanner%2C+G">Gudrun Wanner</a>, <a href="/search/physics?searchtype=author&query=Heinzel%2C+G">Gerhard Heinzel</a>, <a href="/search/physics?searchtype=author&query=Danzmann%2C+K">Karsten Danzmann</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1203.4476v1-abstract-short" style="display: inline;"> We present recent sensitivity measurements of the LISA Technology Package interferometer with articulated mirrors as test masses, actuated by piezo-electric transducers. The required longitudinal displacement resolution of 9 pm/sqrt[Hz] above 3 mHz has been demonstrated with an angular noise that corresponds to the expected in on-orbit operation. The excess noise contribution of this test mass jit… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1203.4476v1-abstract-full').style.display = 'inline'; document.getElementById('1203.4476v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1203.4476v1-abstract-full" style="display: none;"> We present recent sensitivity measurements of the LISA Technology Package interferometer with articulated mirrors as test masses, actuated by piezo-electric transducers. The required longitudinal displacement resolution of 9 pm/sqrt[Hz] above 3 mHz has been demonstrated with an angular noise that corresponds to the expected in on-orbit operation. The excess noise contribution of this test mass jitter onto the sensitive displacement readout was completely subtracted by fitting the angular interferometric data streams to the longitudinal displacement measurement. Thus, this cross-coupling constitutes no limitation to the required performance of the LISA Technology Package interferometry. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1203.4476v1-abstract-full').style.display = 'none'; document.getElementById('1203.4476v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 20 March, 2012; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2012. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Applied Physics B - Lasers and Optics (2008)</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1006.2122">arXiv:1006.2122</a> <span> [<a href="https://arxiv.org/pdf/1006.2122">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Optics">physics.optics</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Space Physics">physics.space-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1364/AO.49.005665">10.1364/AO.49.005665 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Coupling characterization and noise studies of the Optical Metrology System on-board the LISA Pathfinder Mission </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Hechenblaikner%2C+G">G. Hechenblaikner</a>, <a href="/search/physics?searchtype=author&query=Gerndt%2C+R">R. Gerndt</a>, <a href="/search/physics?searchtype=author&query=Johann%2C+U">U. Johann</a>, <a href="/search/physics?searchtype=author&query=Luetzow-Wentzky%2C+P">P. Luetzow-Wentzky</a>, <a href="/search/physics?searchtype=author&query=Wand%2C+V">V. Wand</a>, <a href="/search/physics?searchtype=author&query=Audley%2C+H">H. Audley</a>, <a href="/search/physics?searchtype=author&query=Danzmann%2C+K">K. Danzmann</a>, <a href="/search/physics?searchtype=author&query=Garcia-Marin%2C+A">A. Garcia-Marin</a>, <a href="/search/physics?searchtype=author&query=Heinzel%2C+G">G. Heinzel</a>, <a href="/search/physics?searchtype=author&query=Nofrarias%2C+M">M. Nofrarias</a>, <a href="/search/physics?searchtype=author&query=Steier%2C+F">F. Steier</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1006.2122v1-abstract-short" style="display: inline;"> 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 w… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1006.2122v1-abstract-full').style.display = 'inline'; document.getElementById('1006.2122v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1006.2122v1-abstract-full" style="display: none;"> 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. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1006.2122v1-abstract-full').style.display = 'none'; document.getElementById('1006.2122v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 10 June, 2010; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2010. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">34 pages double-spaced 5 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Appl.Opt.49:5665-5677,2010 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/physics/0604011">arXiv:physics/0604011</a> <span> [<a href="https://arxiv.org/pdf/physics/0604011">pdf</a>, <a href="https://arxiv.org/ps/physics/0604011">ps</a>, <a href="https://arxiv.org/format/physics/0604011">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Space Physics">physics.space-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/0264-9381/23/8/S18">10.1088/0264-9381/23/8/S18 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> On-orbit alignment and diagnostics for the LISA Technology Package </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Marin%2C+A+F+G">A F Garcia Marin</a>, <a href="/search/physics?searchtype=author&query=Wand%2C+V">V Wand</a>, <a href="/search/physics?searchtype=author&query=Steier%2C+F">F Steier</a>, <a href="/search/physics?searchtype=author&query=Cervantes%2C+F+G">F Guzman Cervantes</a>, <a href="/search/physics?searchtype=author&query=Bogenstahl%2C+J">J Bogenstahl</a>, <a href="/search/physics?searchtype=author&query=Jennrich%2C+O">O Jennrich</a>, <a href="/search/physics?searchtype=author&query=Heinzel%2C+G">G Heinzel</a>, <a href="/search/physics?searchtype=author&query=Danzmann%2C+K">K Danzmann</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="physics/0604011v1-abstract-short" style="display: inline;"> This paper presents a procedure to perform fully autonomous on-orbit alignment of the interferometer on board the LISA Technology Package (LTP). LTP comprises two free-floating test masses as inertial sensors that additionally serve as end mirrors of a set of interferometers. From the output signals of the interferometers, a subset has been selected to obtain alignment information of the test ma… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('physics/0604011v1-abstract-full').style.display = 'inline'; document.getElementById('physics/0604011v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="physics/0604011v1-abstract-full" style="display: none;"> This paper presents a procedure to perform fully autonomous on-orbit alignment of the interferometer on board the LISA Technology Package (LTP). LTP comprises two free-floating test masses as inertial sensors that additionally serve as end mirrors of a set of interferometers. From the output signals of the interferometers, a subset has been selected to obtain alignment information of the test masses. Based on these signals, an alignment procedure was developed and successfully tested on the engineering model of the optical bench. Furthermore, operation procedures for the characterization of critical on-orbit properties of the optical metrology system (e.g. fibre noise) have been established. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('physics/0604011v1-abstract-full').style.display = 'none'; document.getElementById('physics/0604011v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 3 April, 2006; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2006. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">7 pages, 6 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Class.Quant.Grav.23:S133-S140,2006 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/physics/0603241">arXiv:physics/0603241</a> <span> [<a href="https://arxiv.org/pdf/physics/0603241">pdf</a>, <a href="https://arxiv.org/ps/physics/0603241">ps</a>, <a href="https://arxiv.org/format/physics/0603241">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Space Physics">physics.space-ph</span> </div> </div> <p class="title is-5 mathjax"> Phase locking to a LISA arm: first results on a hardware model </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Marin%2C+A+F+G">Antonio F Garcia Marin</a>, <a href="/search/physics?searchtype=author&query=Heinzel%2C+G">Gerhard Heinzel</a>, <a href="/search/physics?searchtype=author&query=Schilling%2C+R">Roland Schilling</a>, <a href="/search/physics?searchtype=author&query=Ruediger%2C+A">Albrecht Ruediger</a>, <a href="/search/physics?searchtype=author&query=Wand%2C+V">Vinzenz Wand</a>, <a href="/search/physics?searchtype=author&query=Steier%2C+F">Frank Steier</a>, <a href="/search/physics?searchtype=author&query=Cervantes%2C+F+G">Felipe Guzman Cervantes</a>, <a href="/search/physics?searchtype=author&query=Weidner%2C+A">Andreas Weidner</a>, <a href="/search/physics?searchtype=author&query=Jennrich%2C+O">Oliver Jennrich</a>, <a href="/search/physics?searchtype=author&query=Meca%2C+F+J+M">Francisco J Meca Meca</a>, <a href="/search/physics?searchtype=author&query=Danzmann%2C+K">Karsten Danzmann</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="physics/0603241v1-abstract-short" style="display: inline;"> We present the first experimental confirmation of the so-called "self-phaselocked delay interferometry". This laser frequency stabilization technique consists basically in comparing the prompt laser signal with a delayed version of itself that has been reflected in another LISA satellite 5 million km away. In our table-top experiment, the phase of a voltage-controlled oscillator is stabilized by… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('physics/0603241v1-abstract-full').style.display = 'inline'; document.getElementById('physics/0603241v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="physics/0603241v1-abstract-full" style="display: none;"> We present the first experimental confirmation of the so-called "self-phaselocked delay interferometry". This laser frequency stabilization technique consists basically in comparing the prompt laser signal with a delayed version of itself that has been reflected in another LISA satellite 5 million km away. In our table-top experiment, the phase of a voltage-controlled oscillator is stabilized by means of a control loop based on this technique. In agreement with the theory, the measured unity gain frequency is not limited by the inverse of the used delay (1.6 microseconds). In the time domain, the system also behaves as predicted, including the appearance of a quasi-periodic "ringing" just after the lock acquisition, which decays exponentially. Its initial amplitude is smaller when the loop gain is slowly ramped up instead of suddenly switched on. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('physics/0603241v1-abstract-full').style.display = 'none'; document.getElementById('physics/0603241v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 28 March, 2006; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2006. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">9 pages, 9 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Class.Quant.Grav. 22 (2005) S235-S242 </p> </li> </ol> <div class="is-hidden-tablet">  <span class="help" style="display: inline-block;"><a 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