Isleif, K.-S.; Bischof, L.; Ast, S.; Penkert, D.; Schwarze, T.S. et al.: Towards the LISA backlink: Experiment design for comparing optical phase reference distribution systems. In: Classical and Quantum Gravity 35 (2018), Nr. 8, 85009. DOI: https://doi.org/10.1088/1361-6382/aaa879
Zusammenfassung: | |
LISA is a proposed space-based laser interferometer detecting gravitational waves by measuring distances between free-floating test masses housed in three satellites in a triangular constellation with laser links in-between. Each satellite contains two optical benches that are articulated by moving optical subassemblies for compensating the breathing angle in the constellation. The phase reference distribution system, also known as backlink, forms an optical bi-directional path between the intra-satellite benches. In this work we discuss phase reference implementations with a target non-reciprocity of at most 2π μrad Hz-1, equivalent to 1 pm √Hz-1 for a wavelength of 1064 nm in the frequency band from 0.1 mHz to 1 Hz. One phase reference uses a steered free beam connection, the other one a fiber together with additional laser frequencies. The noise characteristics of these implementations will be compared in a single interferometric set-up with a previously successfully tested direct fiber connection. We show the design of this interferometer created by optical simulations including ghost beam analysis, component alignment and noise estimation. First experimental results of a free beam laser link between two optical set-ups that are co-rotating by ±1° are presented. This experiment demonstrates sufficient thermal stability during rotation of less than 10-4 K √Hz-1 at 1 mHz and operation of the free beam steering mirror control over more than 1 week. © 2018 IOP Publishing Ltd Printed in the UK. | |
Lizenzbestimmungen: | CC BY 3.0 Unported |
Publikationstyp: | Article |
Publikationsstatus: | publishedVersion |
Erstveröffentlichung: | 2018 |
Die Publikation erscheint in Sammlung(en): | Fakultät für Mathematik und Physik |
Pos. | Land | Downloads | ||
---|---|---|---|---|
Anzahl | Proz. | |||
1 | Germany | 269 | 55,69% | |
2 | United States | 79 | 16,36% | |
3 | China | 48 | 9,94% | |
4 | France | 17 | 3,52% | |
5 | Russian Federation | 10 | 2,07% | |
6 | Bulgaria | 7 | 1,45% | |
7 | Belgium | 6 | 1,24% | |
8 | No geo information available | 5 | 1,04% | |
9 | United Kingdom | 5 | 1,04% | |
10 | Japan | 4 | 0,83% | |
andere | 33 | 6,83% |
Hinweis
Zur Erhebung der Downloadstatistiken kommen entsprechend dem „COUNTER Code of Practice for e-Resources“ international anerkannte Regeln und Normen zur Anwendung. COUNTER ist eine internationale Non-Profit-Organisation, in der Bibliotheksverbände, Datenbankanbieter und Verlage gemeinsam an Standards zur Erhebung, Speicherung und Verarbeitung von Nutzungsdaten elektronischer Ressourcen arbeiten, welche so Objektivität und Vergleichbarkeit gewährleisten sollen. Es werden hierbei ausschließlich Zugriffe auf die entsprechenden Volltexte ausgewertet, keine Aufrufe der Website an sich.