Acousto-optical nanoscopy of buried photonic nanostructures
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We develop a nanoscopy method with in-depth resolution for layered photonic devices. Photonics often require tailored light field distributions for the operated optical modes and an exact knowledge of the geometry of a device is crucial to assess its performance. We present an acousto-optical nanoscopy method for the characterization of layered photonic structures based on the uniqueness of the light field distributions: for a given wavelength, we record the reflectivity modulation during the transit of a picosecond acoustic pulse. The obtained temporal profile can be linked to the internal light field distribution. From this information, a reverse-engineering procedure allows us to reconstruct the light field and the underlying photonic structure very precisely. We apply this method to the slow light mode of an AlAs/GaAs micropillar resonator and show its validity for the tailored experimental conditions.
Czerniuk , T , Schneider , C , Kamp , M , Höfling , S , Glavin , B A , Yakovlev , D R , Akimov , A V & Bayer , M 2017 , ' Acousto-optical nanoscopy of buried photonic nanostructures ' , Optica , vol. 4 , no. 6 , pp. 588-594 . https://doi.org/10.1364/OPTICA.4.000588
© Optical Society of America. This work has been made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at www.osapublishing.org / https://doi.org/10.1364/OPTICA.4.000588
DescriptionThis work was supported by the Deutsche Forschungsgemeinschaft (TRR 142 Project A6 and TRR 160 Project B6) and the state of Bavaria. A.V.A. acknowledges the Alexander von Humboldt Foundation. M.B. acknowledges partial financial support from the Russian Ministry of Science and Education (contract No.14.Z50.31.0021).
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