Uncovering dispersion properties in semiconductor waveguides to study photon-pair generation
Year: 2016
Type: article
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.
Source: Nanotechnology
Authors: K Laiho, B Pressl, A Schlager, H Suchomel, M Kamp, S Höfling, C Schneider, G Weihs
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $2,931
OpenAlex ID: W2347008559