Details
| Original language | English |
|---|---|
| Article number | 085009 |
| Number of pages | 17 |
| Journal | Classical and Quantum Gravity |
| Volume | 35 |
| Issue number | 8 |
| Early online date | 14 Mar 2018 |
| Publication status | Published - 26 Apr 2018 |
Abstract
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.
Keywords
- gravitational wave detection, laser interferometer space antenna, laser interferometry, precision metrology, stray light
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Physics and Astronomy (miscellaneous)
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In: Classical and Quantum Gravity, Vol. 35, No. 8, 085009, 26.04.2018.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Towards the LISA backlink: experiment design for comparing optical phase reference distribution systems
AU - Isleif, Katharina Sophie
AU - Bischof, Lea
AU - Ast, Stefan
AU - Penkert, Daniel
AU - Schwarze, Thomas S.
AU - Barranco, Germán Fernández
AU - Zwetz, Max
AU - Veith, Sonja
AU - Hennig, Jan Simon
AU - Tröbs, Michael
AU - Reiche, Jens
AU - Gerberding, Oliver
AU - Danzmann, Karsten
AU - Heinzel, Gerhard
N1 - Funding information: The authors would like to thank the DFG Sonderforschungsbereich (SFB) 1128 Relativistic Geodesy and Gravimetry with Quantum Sensors (geo-Q) for financial support. We also acknowledge support by the Deutsches Zentrum fur Luft- und Raumfahrt (DLR) with funding from the Bundesministerium fur Wirtschaft und Technologie (Project Ref. No. 50 OQ 0601) and the European Space Agency (ESA) within the project Phase reference distribution system (8586/16/NL/BW). The authors would like to thank the DFG Sonderforschungsbereich (SFB) 1128 Relativistic Geodesy and Gravimetry with Quantum Sensors (geo-Q) for financial support. We also acknowledge support by the Deutsches Zentrum für Luft-und Raumfahrt (DLR) with funding from the Bundesministerium für Wirtschaft und Technologie (Project Ref. No. 50 OQ 0601) and the European Space Agency (ESA) within the project Phase reference distribution system (8586/16/NL/BW).
PY - 2018/4/26
Y1 - 2018/4/26
N2 - 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.
AB - 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.
KW - gravitational wave detection
KW - laser interferometer space antenna
KW - laser interferometry
KW - precision metrology
KW - stray light
UR - http://www.scopus.com/inward/record.url?scp=85044836431&partnerID=8YFLogxK
U2 - 10.48550/arXiv.1709.06515
DO - 10.48550/arXiv.1709.06515
M3 - Article
AN - SCOPUS:85044836431
VL - 35
JO - Classical and Quantum Gravity
JF - Classical and Quantum Gravity
SN - 0264-9381
IS - 8
M1 - 085009
ER -