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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 1 — Jan. 5, 2009
  • pp: 163–169

Demonstration of a cavity coupler based on a resonant waveguide grating

Frank Brückner, Daniel Friedrich, Tina Clausnitzer, Oliver Burmeister, Michael Britzger, Ernst-Bernhard Kley, Karsten Danzmann, Andreas Tünnermann, and Roman Schnabel  »View Author Affiliations

Optics Express, Vol. 17, Issue 1, pp. 163-169 (2009)

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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 %.

© 2009 Optical Society of America

OCIS Codes
(050.2770) Diffraction and gratings : Gratings
(230.3990) Optical devices : Micro-optical devices
(230.4040) Optical devices : Mirrors
(050.6624) Diffraction and gratings : Subwavelength structures

ToC Category:
Diffraction and Gratings

Original Manuscript: October 7, 2008
Revised Manuscript: December 10, 2008
Manuscript Accepted: December 17, 2008
Published: December 24, 2008

Frank Brückner, Daniel Friedrich, Tina Clausnitzer, Oliver Burmeister, Michael Britzger, Ernst-Bernhard Kley, Karsten Danzmann, Andreas Tünnermann, and Roman Schnabel, "Demonstration of a cavity coupler based on a resonant waveguide grating," Opt. Express 17, 163-169 (2009)

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