Demonstration of a cavity coupler based on a resonant waveguide grating

verfasst von
Frank Brückner, Daniel Friedrich, Tina Clausnitzer, Oliver Burmeister, Michael Britzger, Ernst Bernhard Kley, Karsten Danzmann, Andreas Tünnermann, Roman Schnabel
Abstract

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 %.

Organisationseinheit(en)
Institut für Gravitationsphysik
Externe Organisation(en)
Friedrich-Schiller-Universität Jena
Max-Planck-Institut für Gravitationsphysik (Albert-Einstein-Institut)
Typ
Artikel
Journal
Optics express
Band
17
Seiten
163-169
Anzahl der Seiten
7
ISSN
1094-4087
Publikationsdatum
05.01.2009
Publikationsstatus
Veröffentlicht
Peer-reviewed
Ja
ASJC Scopus Sachgebiete
Atom- und Molekularphysik sowie Optik
Elektronische Version(en)
https://doi.org/10.1364/OE.17.000163 (Zugang: Offen)