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  Diffractively coupled Fabry-Perot resonator with power-recycling

Britzger, M., Friedrich, D., Kroker, S., Brückner, F., Burmeister, O., Kley, E.-B., et al. (2011). Diffractively coupled Fabry-Perot resonator with power-recycling. Optics Express, 19(16), 14964-14975. doi:http://dx.doi.org/10.1364/OE.19.014964.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-000F-0522-9 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-000F-0523-7
Genre: Journal Article

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 Creators:
Britzger, Michael1, Author              
Friedrich, Daniel1, Author              
Kroker, Stefanie, Author
Brückner, Frank, Author
Burmeister, Oliver1, Author              
Kley, Ernst-Bernhard, Author
Tünnermann, Andreas, Author
Danzmann, Karsten1, Author              
Schnabel, Roman1, Author              
Affiliations:
1Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, ou_24010              

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Free keywords: Physics, Optics, physics.optics
 Abstract: We demonstrate the optical coupling of two cavities without light transmission through a substrate. Compared to a conventional coupling component, that is a partially transmissive mirror, an all-reflective coupler avoids light absorption in the substrate and therefore associated thermal problems, and even allows the use of opaque materials with possibly favourable mechanical and thermal properties. Recently, the all-reflective coupling of two cavities with a low-efficiency 3-port diffraction grating was theoretically investigated. Such a grating has an additional (a third) port. However, it was shown that the additional port does not necessarily decrease the bandwidth of the coupled cavities. Such an all-reflective scheme for cavity coupling is of interest in the field of gravitational wave detection. In such detectors light that is resonantly enhanced inside the so-called power-recycling cavity is coupled to (kilometre-scale) Fabry-Perot resonators representing the arms of a Michelson interferometer. In order to achieve a high sensitivity over a broad spectrum, the Fabry-Perot resonators need to have a high bandwidth for a given (high) power build-up. We realized such an all-reflective coupling in a table-top experiment. Our findings are in full agreement with the theoretical model incorporating the characteristics of the 3-port grating used, and therefore encourage the application of all-reflective cavity couplers in future gravitational wave detectors.

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 Dates: 2011-05-022011
 Publication Status: Published in print
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 Identifiers: arXiv: 1105.0305
DOI: http://dx.doi.org/10.1364/OE.19.014964
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Title: Optics Express
Source Genre: Journal
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Publ. Info: Washington, DC : Optical Society of America
Pages: - Volume / Issue: 19 (16) Sequence Number: - Start / End Page: 14964 - 14975 Identifier: ISSN: 1094-4087
CoNE: /journals/resource/954925609918