Open AccessPhase gratings with tunable diffraction efficiency
Author(s) -
Moritz Stürmer,
Matthias C. Wapler,
Jana Schmitt,
F. Völklein,
Ulrike Wallrabe
Publication year - 2016
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.24.023765
Subject(s) - diffraction efficiency , optics , diffraction , diffraction grating , grating , materials science , phase (matter) , acousto optics , ptychography , optoelectronics , physics , quantum mechanics
We present a new principle for tuning the diffraction efficiency of an optical grating and its implementation in a micro-optical device. The overlap of two phase gratings is used to vary the effective phase shift and hence the diffraction efficiency. We study the working principle using Fourier Optics to simulate the diffraction pattern in the far field and design and realize a device based on integrated piezo actuation. We find good agreement between simulation and experiment and observe a suppression of the first diffraction order intensity by more than 97% and response times of less than 3 ms.