Epsilon-near-zero metalenses operating in the visible

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Epsilon-near-zero metalenses operating in the visible. / Pacheco-Peña, V.; Navarro-Cia, Miguel; Beruete, Miguel.

In: Optics & Laser Technology, Vol. 80, 06.2016, p. 162-168.

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Pacheco-Peña, V. ; Navarro-Cia, Miguel ; Beruete, Miguel. / Epsilon-near-zero metalenses operating in the visible. In: Optics & Laser Technology. 2016 ; Vol. 80. pp. 162-168.

Bibtex

@article{e22cfff6646d4f78ad383dcc3ee62cb0,
title = "Epsilon-near-zero metalenses operating in the visible",
abstract = "Several converging lenses working in the permittivity near to zero (ENZ) regime at optical frequencies are designed using an array of metal-dielectric-metal plasmonic waveguides. These plasmonic waveguides show a dispersive nature that enable to mimic an effective ENZ medium when using the fast wave transverse electric (TE1) mode near its cut-off wavelength. By arranging multiple plasmonic waveguides with the correct engineered dimensions, several metalenses, including graded index (GRIN) ones, and diffractive optical elements (i.e., zoned metalenses) are proposed. The metalenses are designed at λ0 = 474.9nm (f = 631.67THz) with a focal length of 10.75λ0. Numerical results demonstrate that the best performance is obtained for the case of the GRIN metalens in terms of the focal position, transversal resolution and thickness, reducing its volume up to ~52.3% with respect to the smooth-profiled plano-concave metalens.",
keywords = "ENZ artificial materials, Optical focusing, Focusing, Metamaterials, Lenses",
author = "V. Pacheco-Pe{\~n}a and Miguel Navarro-Cia and Miguel Beruete",
year = "2016",
month = jun,
doi = "10.1016/j.optlastec.2016.01.009",
language = "English",
volume = "80",
pages = "162--168",
journal = "Optics & Laser Technology",
issn = "0030-3992",
publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - Epsilon-near-zero metalenses operating in the visible

AU - Pacheco-Peña, V.

AU - Navarro-Cia, Miguel

AU - Beruete, Miguel

PY - 2016/6

Y1 - 2016/6

N2 - Several converging lenses working in the permittivity near to zero (ENZ) regime at optical frequencies are designed using an array of metal-dielectric-metal plasmonic waveguides. These plasmonic waveguides show a dispersive nature that enable to mimic an effective ENZ medium when using the fast wave transverse electric (TE1) mode near its cut-off wavelength. By arranging multiple plasmonic waveguides with the correct engineered dimensions, several metalenses, including graded index (GRIN) ones, and diffractive optical elements (i.e., zoned metalenses) are proposed. The metalenses are designed at λ0 = 474.9nm (f = 631.67THz) with a focal length of 10.75λ0. Numerical results demonstrate that the best performance is obtained for the case of the GRIN metalens in terms of the focal position, transversal resolution and thickness, reducing its volume up to ~52.3% with respect to the smooth-profiled plano-concave metalens.

AB - Several converging lenses working in the permittivity near to zero (ENZ) regime at optical frequencies are designed using an array of metal-dielectric-metal plasmonic waveguides. These plasmonic waveguides show a dispersive nature that enable to mimic an effective ENZ medium when using the fast wave transverse electric (TE1) mode near its cut-off wavelength. By arranging multiple plasmonic waveguides with the correct engineered dimensions, several metalenses, including graded index (GRIN) ones, and diffractive optical elements (i.e., zoned metalenses) are proposed. The metalenses are designed at λ0 = 474.9nm (f = 631.67THz) with a focal length of 10.75λ0. Numerical results demonstrate that the best performance is obtained for the case of the GRIN metalens in terms of the focal position, transversal resolution and thickness, reducing its volume up to ~52.3% with respect to the smooth-profiled plano-concave metalens.

KW - ENZ artificial materials

KW - Optical focusing

KW - Focusing

KW - Metamaterials

KW - Lenses

U2 - 10.1016/j.optlastec.2016.01.009

DO - 10.1016/j.optlastec.2016.01.009

M3 - Article

VL - 80

SP - 162

EP - 168

JO - Optics & Laser Technology

JF - Optics & Laser Technology

SN - 0030-3992

ER -