Low-loss gratings for next-generation gravitational wave detectors

T. Clausnitzer; E.-B. Kley; A. Tuennermann; A. Bunkowski; O. Burmeister; K. Danzmann; R. Schnabel; A. Duparre; S. Gliech

doi:10.1117/12.617334

19 August 2005 Low-loss gratings for next-generation gravitational wave detectors

T. Clausnitzer, E.-B. Kley, A. Tuennermann, A. Bunkowski, O. Burmeister, K. Danzmann, R. Schnabel, A. Duparre, S. Gliech

Author Affiliations +

Proceedings Volume 5870, Advances in Thin-Film Coatings for Optical Applications II; 58700J (2005) https://doi.org/10.1117/12.617334
Event: Optics and Photonics 2005, 2005, San Diego, California, United States

Abstract

By combining electron beam lithography with coating processes, very shallow gratings with diffraction efficiencies between 0.02% and 7% have been realized. Advantages and disadvantages of different layout concepts for such gratings, their fabrication regime and measurements of their scattering will be discussed. The application of such gratings as coupling components to a reflective Fabry-Perot cavity resulted in a finesse of more than 400.

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T. Clausnitzer, E.-B. Kley, A. Tuennermann, A. Bunkowski, O. Burmeister, K. Danzmann, R. Schnabel, A. Duparre, and S. Gliech "Low-loss gratings for next-generation gravitational wave detectors", Proc. SPIE 5870, Advances in Thin-Film Coatings for Optical Applications II, 58700J (19 August 2005); https://doi.org/10.1117/12.617334

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