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of 7
pro vyhledávání: '"Gour Jeetendra"'
Autor:
Gour Jeetendra, Beer Sebastian, Paul Pallabi, Alberucci Alessandro, Steinert Michael, Szeghalmi Adriana, Siefke Thomas, Peschel Ulf, Nolte Stefan, Zeitner Uwe Detlef
Publikováno v:
Nanophotonics, Vol 13, Iss 22, Pp 4191-4202 (2024)
In the rapidly evolving field of plasmonic metasurfaces, achieving homogeneous, reliable, and reproducible fabrication of sub-5 nm dielectric nanogaps is a significant challenge. This article presents an advanced fabrication technology that addresses
Externí odkaz:
https://doaj.org/article/12b6110fbc964d26b262f7d0d1f7e066
Autor:
Mukherjee Deshabrato, Burger Sven, Siefke Thomas, Gour Jeetendra, Bodermann Bernd, Petrik Peter
Publikováno v:
EPJ Web of Conferences, Vol 309, p 02016 (2024)
Gold gratings were measured by spectroscopic ellipsometry and modeled by the finite element method to investigate the capabilities of optical dimensional metrology for plasmonic diffractive structures. The gratings were prepared by electron beam lith
Externí odkaz:
https://doaj.org/article/16186d4d1f5f4d8fb34ed36e506912d9
We investigate experimentally Third Harmonic Generation (THG) from plasmonic metasurfaces consisting of two-dimensional rectangular lattices of centrosymmetric gold nano-bars. By varying the incidence angle and the lattice period, we show how Surface
Externí odkaz:
http://arxiv.org/abs/2211.03560
Autor:
Beer, Sebastian, Gour, Jeetendra, Alberucci, Alessandro, David, Christin, Nolte, Stefan, Zeitner, Uwe D.
Publikováno v:
Opt. Express 30 (2022) 40884-40896
Second harmonic generation is enhanced at the surface lattice resonance in plasmonic nanoparticle arrays. We carried out a parametric investigation on two-dimensional lattices composed of gold nanobars where the centrosymmetry is broken at oblique in
Externí odkaz:
http://arxiv.org/abs/2206.14433
In the supplemental, we show SEM images of our samples, linear transmission spectra, post-processing, conversion efficiency, and TH signal vs input power slope confirming the third order nonlinearity from the metasurfaces.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::43233e0e8becd00d7b04c4732be3bb7e
Autor:
Beer, Sebastian, Gour, Jeetendra, Alberucci, Alessandro, David, Christin, Nolte, Stefan, Zeitner, Uwe
In the supplemental, we provide more details on the linear response of the metasurfaces, nonlinear characterization setup, generalization of nonlinear inverse scattering theory, and evaluation of the effective metasurface nonlinearity.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::025019d314f3da12c042ac51ad06057e
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