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arXiv · 1303.0544

Invariance of waveguide grating mirrors to lateral displacement phase shifts

Daniel Brown·Daniel Friedrich·Frank Brückner·Ludovico Carbone·Roman Schnabel·Andreas Freise
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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.

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Daniel Brown, Daniel Friedrich, Frank Brückner, Ludovico Carbone, Roman Schnabel, Andreas Freise. 2013-04-30. Invariance of waveguide grating mirrors to lateral displacement phase shifts. https://doi.org/10.1364/ol.38.001844

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