ORCID Profile
0000-0003-1661-7868
Current Organisation
Max-Planck-Gesellschaft
Does something not look right? The information on this page has been harvested from data sources that may not be up to date. We continue to work with information providers to improve coverage and quality. To report an issue, use the Feedback Form.
Publisher: American Physical Society (APS)
Date: 06-2004
Publisher: Springer Science and Business Media LLC
Date: 08-05-2012
Publisher: American Physical Society (APS)
Date: 12-05-2005
Publisher: American Physical Society (APS)
Date: 30-04-2004
Publisher: Copernicus GmbH
Date: 17-11-2017
Abstract: Abstract. The Gravity Recovery and Climate Experiment (GRACE) mission has yielded data on the Earth's gravity field to monitor temporal changes for more than 15 years. The GRACE twin satellites use microwave ranging with micrometre precision to measure the distance variations between two satellites caused by the Earth's global gravitational field. GRACE Follow-on (GRACE-FO) will be the first satellite mission to use inter-satellite laser interferometry in space. The laser ranging instrument (LRI) will provide two additional measurements compared to the GRACE mission: interferometric inter-satellite ranging with nanometre precision and inter-satellite pointing information. We have designed a set of simulated GRACE-FO data, which include LRI measurements, apart from all other GRACE instrument data needed for the Earth's gravity field recovery. The simulated data files are publicly available via 0.22027/AMDC2 and can be used to derive gravity field solutions like from GRACE data. This paper describes the scientific basis and technical approaches used to simulate the GRACE-FO instrument data.
Publisher: IOP Publishing
Date: 05-2010
Publisher: American Physical Society (APS)
Date: 12-08-2005
Publisher: IEEE
Date: 03-2010
Publisher: IOP Publishing
Date: 11-08-2003
Publisher: American Physical Society (APS)
Date: 25-10-2005
Publisher: American Physical Society (APS)
Date: 25-10-2005
Publisher: IOP Publishing
Date: 16-04-2014
Publisher: IOP Publishing
Date: 29-09-2004
Publisher: IOP Publishing
Date: 21-04-2005
Publisher: American Physical Society (APS)
Date: 02-06-2004
Publisher: IOP Publishing
Date: 12-03-2002
Publisher: SPIE
Date: 21-02-2003
DOI: 10.1117/12.459095
Publisher: Elsevier BV
Date: 2004
Publisher: IOP Publishing
Date: 09-02-2004
Publisher: AIP Publishing
Date: 03-2014
DOI: 10.1063/1.4866682
Abstract: A method based on phase-shifting Fizeau interferometry is presented with which retroreflectors with large incoming-outgoing beam separations can be tested. The method relies on a flat Reference Bar that is used to align two auxiliary mirrors parallel to each other to extend the aperture of the interferometer. The method is applied to measure the beam coalignment of a prototype Triple Mirror Assembly of the GRACE Follow-On Laser Ranging Interferometer, a future satellite-to-satellite tracking device for Earth gravimetry. The Triple Mirror Assembly features a lateral beam offset of incoming and outgoing beam of 600 mm, whereas the acceptance angle for the incoming beam is only about ±2 mrad. With the developed method, the beam coalignment of the prototype Triple Mirror Assembly was measured to be 9 μrad with a repeatability of below 1 μrad.
Publisher: American Physical Society (APS)
Date: 28-11-2005
Publisher: IOP Publishing
Date: 03-02-2004
Publisher: American Physical Society (APS)
Date: 08-09-2005
Publisher: American Physical Society (APS)
Date: 07-03-2006
Publisher: IOP Publishing
Date: 29-03-2006
Publisher: AIP Publishing
Date: 23-07-2003
DOI: 10.1063/1.1589160
Abstract: The British–German interferometric gravitational-wave detector GEO600 uses two high-finesse triangular ring cavities of 8 m optical pathlength each, as an optical mode-cleaning system. The modecleaner system is housed in an ultrahigh-vacuum environment to avoid contamination of the optics and to minimize both the influence of refractive index variations of the air and acoustic coupling to the optics. To isolate the cavities from seismic noise, all optical components are suspended as double pendulums. These pendulums are d ed at their resonance frequencies at the upper pendulum stage with magnet-coil actuators. A suspended reaction mass supports three coils matching magnets bonded onto the surface of one mirror of each cavity, allowing length control of the modecleaner cavities to maintain resonance with the laser light. A fully automated control system stabilizes the frequency of the slave laser to that of the master laser, the frequency of the master laser to the length of the first modecleaner and the length of the first to the length of the second modecleaner. The control system uses the Pound–Drever–Hall sideband technique and operates autonomously over long time periods with only infrequent human interaction. The duty cycle of the system was measured to be 99.7% during an 18 day period. The throughput of the whole modecleaner system is about 50%. In this article, we give an overview of the mechanical and optical setup and the achieved performance of the double modecleaner system.
Publisher: IOP Publishing
Date: 07-08-2003
Publisher: IOP Publishing
Date: 24-03-2006
Publisher: IOP Publishing
Date: 16-09-2014
Publisher: World Scientific Publishing Company
Date: 02-2006
Publisher: The Optical Society
Date: 02-05-2014
DOI: 10.1364/OE.22.011351
Publisher: American Physical Society (APS)
Date: 07-05-2004
No related grants have been discovered for Gerhard Heinzel.