Zusammenfassung: | |
In the planned eLISA mission a key part of the system is the optical bench that holds the interferometers for reading out the inter-spacecraft distance and the test mass position. We report on ongoing technology development for the eLISA optical system like the back-link between the optical benches and the science interferometer where the local beam is interfered with the received beam from the distant spacecraft. The focus will be on a setup to investigate the tilt-to-pathlength coupling in the science interferometer. To test the science interferometer in the lab a second bench providing a laser beam and a reference interferometer is needed. We present a setup with two ultra-stable low expansion glass benches and bonded optics. To suppress the tilt-to-pathlength coupling to the required level (few μm/rad) imaging optics are placed in front of the interferometer photo diodes.
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Lizenzbestimmungen: | CC BY 3.0 Unported - http://creativecommons.org/licenses/by/3.0/ |
Publikationstyp: | Article |
Publikationsstatus: | publishedVersion |
Erstveröffentlichung: | 2016 |
Schlagwörter (deutsch): | Gravitationswelle |
Schlagwörter (englisch): | Gravitational effects, Gravity waves, Laser beams, Optical systems, Spacecraft, Tracking (position), Back-links, Imaging optics, Low expansion, Mass position, Optical Bench, Optical testbed, Path length, Technology development, Interferometers |
Fachliche Zuordnung (DDC): | 500 | Naturwissenschaften, 530 | Physik |
Kontrollierte Schlagwörter: | Konferenzschrift |
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