2014/09/16 by Mária Csete, Maria Csete, Csete, Maria +12
Engineering · Materials Science · Physics and Astronomy · #FOS: Physical sciences #Optical Coatings and Gratings #Optics (physics.optics) #Photonic and Optical Devices #Plasmonic and Surface Plasmon Research #physics.optics
paper · pdf · doi:10.48550/arxiv.1409.4720
21 pages, 9 figures
arxiv created 2014/09/16 · openalex publication_date 2014/09/16 · arxiv updated 2014/09/17 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Configurations capable of maximizing both absorptance and polarization contrast were determined for 1550 nm polarized light illumination of different plasmonic structure integrated superconducting nanowire single-photon detectors (SNSPDs) consisting of p=264 nm and P=792 nm periodic niobium-nitride (NbN) patterns on silica substrate. Global NbN absorptance maxima appear in case of p/s-polarized light illumination in S/P-orientation (gamma=90 azimuthal angle) and the highest polarization contrast is attained in S-orientation of all devices. Common nanophotonical origin of absorptance enhancement is collective resonance on nano-cavity-gratings with different profiles, which is promoted by coupling between localized modes in quarter wavelength MIM nano-cavities and laterally synchronized Brewster-Zenneck-type surface waves in integrated SNSPDs possessing a three-quarter-wavelength-scaled periodicity. The spectral sensitivity and dispersion characteristics reveal that device design specific optimal configurations exist.