Abstract
We present a method to analyze the coupling of lateral displacements in nanoscale structures, in particular waveguide grating mirrors (WGMs), 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, to the precision of our simulations (10-7 rad), waveguide mirrors do not couple lateral displacement into phase noise of a reflected beam and that WGMs are therefore not subject to the same stringent alignment requirements as previously proposed layouts using diffraction gratings.
Original language | English |
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Pages (from-to) | 1844-1846 |
Number of pages | 3 |
Journal | Optics Letters |
Volume | 38 |
Issue number | 11 |
DOIs | |
Publication status | Published - 1 Jun 2013 |