Plasmonic structure integrated single-photon detector configurations to improve absorptance and polarization contrast

M. Csete, Gábor Szekeres, András Szenes, Anikó Szalai, Gábor Szabó

Research output: Contribution to journalArticle

8 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)3513-3539
Number of pages27
JournalSensors (Basel, Switzerland)
Volume15
Issue number2
DOIs
Publication statusPublished - 2015

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Niobium
Nanowires
absorptance
Light polarization
Lighting
Photons
niobium
Nitrides
polarized light
nitrides
nanowires
Metals
illumination
Polarization
Detectors
Equipment Design
Light
Wavelength
detectors
photons

ASJC Scopus subject areas

  • Medicine(all)

Cite this

Plasmonic structure integrated single-photon detector configurations to improve absorptance and polarization contrast. / Csete, M.; Szekeres, Gábor; Szenes, András; Szalai, Anikó; Szabó, Gábor.

In: Sensors (Basel, Switzerland), Vol. 15, No. 2, 2015, p. 3513-3539.

Research output: Contribution to journalArticle

Csete, M. ; Szekeres, Gábor ; Szenes, András ; Szalai, Anikó ; Szabó, Gábor. / Plasmonic structure integrated single-photon detector configurations to improve absorptance and polarization contrast. In: Sensors (Basel, Switzerland). 2015 ; Vol. 15, No. 2. pp. 3513-3539.
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