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- W2069915284 abstract "Novel infrared superconducting nanowire single-photon detectors (SNSPD) were designed, which comprise a meanderedpattern of niobium-nitride (NbN) stripes and different integrated plasmonic structures on silica substrate. To enhanceabsorptance of 1550 nm wavelength p-polarized light, patterns with p =264 nm periodicity were investigated, while toenhance detection efficiency, patterns with P =792.5 nm periodicity commensurate with the wavelength of surfaceplasmon polaritons at silica-gold interface were also designed. In OC-SNSPDs integrated with ~quarter-photonicwavelengthnano-optical cavity closed by a gold reflector, the highest 63/27 % absorptance was attained in p/P-pitchdesign at perpendicular incidence onto NbN patterns in P-orientation corresponding to incidence plane parallel to thestripes, due to the E-field antinode at the NbN-silica interface. In NCAI-SNSPDs, where each NbN stripe is located atthe entrance of a quarter-plasmon-wavelength MIM nano-cavity, enhanced 85.1/34 % absorptance is attainable in p /Ppitchdesign at perpendicular incidence in S-orientation, when the incidence plane is perpendicular to the integratedpattern, due to collective resonances. The maximal 95.3/70.3 % absorptances are attained at large tilting corresponding toplasmonic Brewster angles via ultra-broadband tunneling. In NCDAI-SNSPDs the longer vertical gold segments with P -pitch,which can be embedded into the silica substrate via two-step lithography, enable to attain large absorptance atsmall polar angles in S-orientation, due to efficient grating-coupling phenomenon. The highest 92.7/75 % absorptancesare attained at 19.85°/19.35° polar angles in p/P -pitch design. P-pitch NCDAI-SNSPD supporting coupled surface wavescapable of ensuring synchronous E-field enhancement below the NbN stripes is proposed for detection efficiencymaximization in specific spectral-bands." @default.
- W2069915284 created "2016-06-24" @default.
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- W2069915284 date "2013-09-11" @default.
- W2069915284 modified "2023-10-08" @default.
- W2069915284 title "Plasmon enhanced single-photon detection" @default.
- W2069915284 doi "https://doi.org/10.1117/12.2024572" @default.
- W2069915284 hasPublicationYear "2013" @default.
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