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Upper Limit to the Transverse to Longitudinal Motion Coupling of a Waveguide Mirror

By S. Leavey, B. W. Barr, A. S. Bell, E-B. Kley, N. Gordon, C. Gräf, S. Hild, S. H. Huttner, S. Kroker, J. Macarthur, C. Messenger, M. Pitkin, B. Sorazu, K. Strain and A. Tünnermann

Abstract

Waveguide mirrors possess nano-structured surfaces which can potentially provide a significant reduction in thermal noise over conventional dielectric mirrors. To avoid introducing additional phase noise from motion of the mirror transverse to the reflected light, however, they must possess a mechanism to suppress the phase effects associated with the incident light translating across the nano-structured surface. It has been shown that with carefully chosen parameters this additional phase noise can be suppressed. We present an experimental measurement of the coupling of transverse to longitudinal displacements in such a waveguide mirror designed for 1064 nm light. We place an upper limit on the level of measured transverse to longitudinal coupling of one part in seventeen thousand with 95% confidence, representing a significant improvement over a previously measured grating mirror

Topics: Astrophysics - Instrumentation and Methods for Astrophysics, General Relativity and Quantum Cosmology, Physics - Optics
Publisher: 'IOP Publishing'
Year: 2015
DOI identifier: 10.1088/0264-9381/32/17/175005
OAI identifier: oai:arXiv.org:1410.1808

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