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          Institute: MPI für Gravitationsphysik     Collection: Laser Interferometry & Gravitational Wave Astronomy     Display Documents



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ID: 399825.0, MPI für Gravitationsphysik / Laser Interferometry & Gravitational Wave Astronomy
Demonstration of a cavity coupler based on a resonant waveguide grating
Authors:Brückner, Frank; Friedrich, Daniel; Clausnitzer, Tina; Burmeister, Oliver; Britzger, Michael; Kley, Ernst-Bernhard; Danzmann, Karsten; Tünnermann, Andreas; Schnabel, Roman
Date of Publication (YYYY-MM-DD):2009-01-05
Title of Journal:Optics Express
Volume:17
Issue / Number:1
Start Page:163
End Page:169
Review Status:Peer-review
Audience:Not Specified
Abstract / Description:Thermal noise in multilayer optical coatings may not only limit the sensitivity of future gravitational wave detectors in their most sensitive frequency band but is also a major impediment for experiments that aim to reach the standard quantum limit or to cool mechanical systems to their quantum ground state. Here, we present the experimental realization and characterization of a cavity coupler, which is based on a surface relief guided-mode resonant grating. Since the required thickness of the dielectric coating is dramatically decreased compared to conventional mirrors, it is expected to provide low mechanical loss and, thus, low thermal noise. The cavity coupler was incorporated into a Fabry-Perot resonator together with a conventional high quality mirror. The finesse of this cavity was measured to be F = 657, which corresponds to a coupler reflectivity of R = 99.08%.
External Publication Status:published
Document Type:Article
Communicated by:Karsten Danzmann
Affiliations:MPI für Gravitationsphysik/Teilinstitut Hannover
MPI für Gravitationsphysik/Laser Interferometry & Gravitational Wave Astronomy
Identifiers:ISSN:1094-4087
DOI:10.1364/OE.17.000163
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