Low-loss grating for coupling to a high-finesse cavity.
A concept for a low-loss all-reflective cavity coupler is experimentally demonstrated at a wavelength of 1064 nm. A 1450-nm period dielectric reflection grating with a diffraction efficiency of 0.58% in the - 1st order is used in the 2nd-order Littrow configuration as a coupler to form a cavity with a finesse of 400. The application of such reflective low-loss cavity couplers in future generations of gravitational-wave detectors and implementation issues are discussed.
Bunkowski
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Max-Planck-Institut für Gravitationsphysik (Albert-Einstein-Institut), and Institut für Atom- und Molekülphysik, Universität Hannover, Hannover, Germany. alexander.bunkowski@aei.mpg.de
Burmeister
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Beyersdorf
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Danzmann
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Schnabel
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R
Clausnitzer
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Kley
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Tünnermann
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