Uncovering dispersion properties in semiconductor waveguides to study photon-pair generation
Abstract
We investigate the dispersion properties of ridge Bragg-reflection waveguides to deduce their phasematching characteristics. These are crucial for exploiting them as sources of parametric down-conversion (PDC). In order to estimate the phasematching bandwidth we first determine the group refractive indices of the interacting modes via Fabry–Perot experiments in two distant wavelength regions. Second, by measuring the spectra of the emitted PDC photons, we gain access to their group index dispersion. Our results offer a simple approach for determining the PDC process parameters in the spectral domain, and provide important feedback for designing such sources, especially in the broadband case.
Citation
Laiho , K , Pressl , B , Schlager , A , Suchomel , H , Kamp , M , Höfling , S , Schneider , C & Weihs , G 2016 , ' Uncovering dispersion properties in semiconductor waveguides to study photon-pair generation ' , Nanotechnology , vol. 27 , no. 43 , 434003 . https://doi.org/10.1088/0957-4484/27/43/434003
Publication
Nanotechnology
Status
Peer reviewed
ISSN
0957-4484Type
Journal article
Description
This work was supported by the FWF through project no. I-2065-N27, the DFG Project no. SCHN1376/2-1, the ERC project EnSeNa (257531) and the State of Bavaria.Collections
Items in the St Andrews Research Repository are protected by copyright, with all rights reserved, unless otherwise indicated.