Polarization Independent High Absorption Efficiency Single-Photon Detectors Based on Three-Dimensional Integrated Superconducting and Plasmonic Patterns

Bendegúz Tóth, András Szenes, Dávid Maráczi, Balázs Bánhelyi, Tibor Csendes, Mária Csete

Research output: Contribution to journalArticle

Abstract

Three-dimensional superconducting nanowire single-photon detectors (SNSPDs) composed of two-dimensional plasmonic gratings integrated into two one-dimensional periodic and vertically shifted patterns of absorbing niobium-nitride nanowires were optimized numerically. Their potential to achieve high infrared absorptance polarization independently was proven. Advantages of vertical-wall, tilted-wall and in-substrate deepening gold antenna segments were compared. The highest ∼93% polarization independent absorptance maximum was achieved exactly at the desired 1550 nm in nano-cavity-double-deflector grating integrated SNSPDs with 1.003 (0.997) polarization contrast at perpendicular incidence in 0° (90°) azimuthal orientation. This device exhibits the smallest polarization dependence throughout the complete azimuthal angle and the inspected wavelength intervals.

Original languageEnglish
Article number9068417
JournalIEEE Journal of Selected Topics in Quantum Electronics
Volume26
Issue number3
DOIs
Publication statusPublished - May 1 2020

Keywords

  • Infrared detectors
  • periodic structures
  • photodetectors
  • plasmons

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

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