Design and simulation of reflect-array metasurfaces in the visible regime

Salma Alrasheed; Enzo Di Fabrizio

doi:10.1364/AO.56.003213

Applied Optics
Vol. 56,
Issue 11,
pp. 3213-3218
(2017)
•https://doi.org/10.1364/AO.56.003213

Design and simulation of reflect-array metasurfaces in the visible regime

Salma Alrasheed and Enzo Di Fabrizio

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Salma Alrasheed and Enzo Di Fabrizio, "Design and simulation of reflect-array metasurfaces in the visible regime," Appl. Opt. 56, 3213-3218 (2017)

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Abstract

Metasurfaces are new, promising ultrathin materials that can enable many novel optical devices due to their ability to act as a discontinuity interface that introduces an abrupt change in amplitude, phase, and sometimes the polarization of the incident light at the wavelength scale. Therefore they can function as flat optical elements. Here, we investigate the anomalous reflection of light for transverse-magnetic (TM) polarization for normal and oblique incidence in the visible regime. We propose gradient phase gap-surface plasmon metasurfaces that exhibit high conversion efficiency (up to $\sim 97 %$ of total reflected light) to the anomalous reflection angle for blue, green, and red wavelengths at normal and oblique incidence, and where light polarization is unchanged after the reflection.

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Color	Wavelength (nm)	$L_{x 1}$ , $L_{y 1}$ (nm)	$L_{x 2}$ , $L_{y 2}$ (nm)	$L_{x 3}$ , $L_{y 3}$ (nm)	$L_{x 4}$ , $L_{y 4}$ (nm)	$L_{x 5}$ , $L_{y 5}$ (nm)	$L_{x 6}$ , $L_{y 6}$ (nm)	$Λ_{x}$ (nm)	$Λ_{y}$ (nm)
Blue	445	20, 200	58, 200	80, 200	138, 150	170, 40	220, 15	240	240
Green	530	20, 200	76, 200	96, 200	120, 200	144, 30	204, 20	300	300
Red	650	43, 200	98, 200	122, 200	156, 200	220, 100	250, 20	300	300

Color	Wavelength (nm)	$L_{x}$ , $L_{y}$ (nm)	$Λ_{x}$ (nm)	$Λ_{y}$ (nm)
Blue	430	260, 260	400	270
Green	520	357, 360	500	370
Red	620	500, 460	630	490

Color	Wavelength (nm)	$L_{x 1}$ , $L_{y 1}$ (nm)	$L_{x 2}$ , $L_{y 2}$ (nm)	$L_{x 3}$ , $L_{y 3}$ (nm)	$L_{x 4}$ , $L_{y 4}$ (nm)	$L_{x 5}$ , $L_{y 5}$ (nm)	$L_{x 6}$ , $L_{y 6}$ (nm)	$Λ_{x}$ (nm)	$Λ_{y}$ (nm)
Blue	445	20, 200	58, 200	80, 200	138, 150	170, 40	220, 15	240	240
Green	530	20, 200	76, 200	96, 200	120, 200	144, 30	204, 20	300	300
Red	650	43, 200	98, 200	122, 200	156, 200	220, 100	250, 20	300	300

Color	Wavelength (nm)	$L_{x}$ , $L_{y}$ (nm)	$Λ_{x}$ (nm)	$Λ_{y}$ (nm)
Blue	430	260, 260	400	270
Green	520	357, 360	500	370
Red	620	500, 460	630	490

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Applied Optics