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Experimental demonstration of a suspended, diffractively coupled Fabry-Perot cavity

: Edgar, M.P.; Barr, B.W.; Nelson, J.; Plissi, M.V.; Strain, K.A.; Burmeister, O.; Britzger, M.; Danzmann, K.; Schnabel, R.; Clausnitzer, T.; Brückner, F.; Kley, E.-B.; Tünnermann, A.


Márka, Z.:
8th Edoardo Amaldi Conference on Gravitational Waves, Amaldi 2010. Selected articles : Columbia University, New York, 22 - 26 June 2009
Bristol: IOP Publishing, 2010 (Classical and quantum gravity. Special issue 27.2010, Nr.8)
ISSN: 0264-9381
Art. 084029, 9 pp.
Edoardo Amaldi Conference on Gravitational Waves <8, 2010, New York/NY>
Conference Paper, Journal Article
Fraunhofer IOF ()
gravitational-wave detector; phase; noise

Diffraction gratings have been considered as input couplers for Fabry-Perot cavities in future gravitational wave detectors. We experimentally demonstrate the use of a triple-suspended, diffractively coupled cavity and examine conventional Pound-Drever-Hall length sensing and control techniques to maintain the required operating condition. Utilizing the diffractively coupled Fabry-Perot cavity, we investigate the effects associated with translational grating motion and observe a unique 1/f slope in the magnitude of the frequency response when monitoring the forward-reflected error signal.