title: Plasmonic structure integrated single-photon detector configurations to improve absorptance and polarization contrast.
abstract: Configurations capable of maximizing both the absorption component of system detection efficiency and the achievable 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 effective NbN absorptance maxima appear in case of p/s-polarized light illumination in S/P-orientation (γ = 90°/0° 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 nanocavity gratings with different profiles, which is promoted by coupling between localized modes in quarter-wavelength metal-insulator-metal nanocavities 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.
authors: Department of Optics and Quantum Electronics, University of Szeged, H-6720 Szeged, Dóm tér 9 6720, Hungary. mcsete@physx.u-szeged.hu.
authors: Mária
authors: M
authors: Csete
authors: Department of Optics and Quantum Electronics, University of Szeged, H-6720 Szeged, Dóm tér 9 6720, Hungary. gszekeres@titan.physx.u-szeged.hu.
authors: Gábor
authors: G
authors: Szekeres
authors: Department of Optics and Quantum Electronics, University of Szeged, H-6720 Szeged, Dóm tér 9 6720, Hungary. andraslaszlo.szenes@gmail.com.
authors: András
authors: A
authors: Szenes
authors: Department of Optics and Quantum Electronics, University of Szeged, H-6720 Szeged, Dóm tér 9 6720, Hungary. andraslaszlo.szenes@gmail.com.|MTA-SZTE Photoacustic Research Group, University of Szeged, H-6720 Szeged, Dóm tér 9 6720, Hungary. andraslaszlo.szenes@gmail.com.
authors: Anikó
authors: A
authors: Szalai
authors: Department of Optics and Quantum Electronics, University of Szeged, H-6720 Szeged, Dóm tér 9 6720, Hungary. gszekeres@titan.physx.u-szeged.hu.
authors: Gábor
authors: G
authors: Szabó
mesh_terms: D015502:Absorptiometry, Photon; D004553:Electric Conductivity; D004867:Equipment Design; D036103:Nanotechnology; D053770:Nanowires / Q000737:chemistry; D009556:Niobium; D010783:Photometry
chemical_list: D009556:Niobium
references: J Opt Soc Am A Opt Image Sci Vis. 2003 May;20(5):836-43
references: 12747431
references: Phys Rev Lett. 2003 May 30;90(21):213901
references: 12786554
references: Phys Rev E Stat Nonlin Soft Matter Phys. 2003 Jul;68(1 Pt 2):016603
references: 12935266
references: Phys Rev E Stat Nonlin Soft Matter Phys. 2007 Jan;75(1 Pt 2):016612
references: 17358280
references: Opt Express. 2006 Jan 23;14(2):527-34
references: 19503367
references: Opt Express. 2006 Jul 10;14(14):6400-13
references: 19516818
references: Opt Express. 2006 Oct 30;14(22):10220-7
references: 19529417
references: Opt Express. 2006 Nov 27;14(24):11823-32
references: 19529605
references: Nano Lett. 2010 Feb 10;10(2):661-4
references: 20041700
references: Appl Opt. 1995 Jun 10;34(17):3055-63
references: 21052460
references: Opt Express. 2011 Jan 3;19(1):17-31
references: 21263538
references: Nano Lett. 2011 May 11;11(5):2048-53
references: 21456546
references: Phys Rev Lett. 2011 Mar 25;106(12):123902
references: 21517317
references: Appl Opt. 2011 Nov 1;50(31):5949-56
references: 22086019
references: Nat Commun. 2012;3:1325
references: 23271658
references: Opt Express. 2013 Jan 28;21(2):1440-7
references: 23389125
references: Sci Rep. 2013;3:2406
references: 23934331
references: Phys Rev B Condens Matter. 1991 Sep 15;44(11):5855-5872
references: 9998431