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Journal Article

Invariance of waveguide grating mirrors to lateral displacement phase shifts

MPS-Authors
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Friedrich,  Daniel
Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

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

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1303.0544.pdf
(Preprint), 320KB

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Citation

Brown, D., Friedrich, D., Brückner, F., Carbone, L., Schnabel, R., & Freise, A. (2013). Invariance of waveguide grating mirrors to lateral displacement phase shifts. Optics Letters, 38(11), 1844-1846. doi:10.1364/OL.38.001844.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0015-15B3-5
Abstract
We present a method to analyse the coupling of lateral displacements in nanoscale structures, in particular waveguide grating mirrors (WGM), into the phase of a reflected Gaussian beam using a finite-difference time-domain simulation. Such phase noise is of interest for using WGMs in high-precision interferometry. We show that WGMs do not couple lateral displacements into the phase of a reflected beam to a precision of 10^{-7} rad and that WGMs are therefore not subject to the same stringent alignment requirements as previously proposed layouts using diffraction gratings.