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Conference Paper

Lateral input-optic displacement in a diffractive Fabry-Perot cavity

MPS-Authors
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Chelkowski,  S.
Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

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Freise,  A.
Laser Physics, Max Planck Institute of Quantum Optics, Max Planck Society;

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Hild,  S.
Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

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Strain,  K. A.
Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

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Burmeister,  O.
Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

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Schnabel,  R.
Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

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Fulltext (public)

JoPCS228_012022.pdf
(Any fulltext), 448KB

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Citation

Hallam, J., Chelkowski, S., Freise, A., Barr, B. W., Hild, S., Strain, K. A., et al. (2010). Lateral input-optic displacement in a diffractive Fabry-Perot cavity. Journal of Physics: Conference Series, 228: 012022.


Cite as: http://hdl.handle.net/11858/00-001M-0000-000E-B05C-C
Abstract
All-reflective configurations have been suggested for future laser-interferometric gravitational wave detectors. Diffraction gratings would be required as core elements of any such design. In this paper, coupling of lateral grating displacement to the output ports of a diffractive Fabry-Perot cavity was derived using a steady-state technique. The signal to noise ratio versus a potential gravitational wave signal was compared for each cavity output port. For a cavity featuring parameters similar to the planned Advanced Virgo instrument, we found the forward-reflected port offers the highest SNR at low frequencies. Furthermore, the lateral isolation suspension requirements were relaxed by a factor of twenty at a frequency of 10Hz versus the transmitted port.