Polarization Independent High Absorption Efficiency Single-Photon Detectors Based on Three-Dimensional Integrated Superconducting And Plasmonic Patterns
| Autor: | David Maraczi, András Szenes, Mária Csete, Balázs Bánhelyi, Tibor Csendes, Bendeguz Toth |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
business.industry Nanowire Physics::Optics Photodetector 02 engineering and technology Grating Polarization (waves) Atomic and Molecular Physics and Optics Wavelength 020210 optoelectronics & photonics Optics Absorptance 0202 electrical engineering electronic engineering information engineering Perpendicular Electrical and Electronic Engineering business Plasmon |
| Zdroj: | IEEE Journal of Selected Topics in Quantum Electronics. 26:1-9 |
| ISSN: | 1558-4542 1077-260X |
| DOI: | 10.1109/jstqe.2020.2987131 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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