Slot-grating flat lens for telecom wavelengths

Jonathan R Pugh; Jamie L Stokes; Martin Lopez-Garcia; Choon-How Gan; Geoff R Nash; John G Rarity; Martin J Cryan; Martin Lopez Garcia

doi:10.1364/OL.39.003786

Slot-grating flat lens for telecom wavelengths

Jonathan R Pugh, Jamie L Stokes, Martin Lopez-Garcia, Choon-How Gan, Geoff R Nash, John G Rarity, Martin J Cryan, Martin Lopez Garcia

Research output: Contribution to journal › Article (Academic Journal)

1 Citation (Scopus)

Abstract

We present a stand-alone beam-focusing flat lens for use in the telecommunications wavelength range. Light incident on the back surface of the lens propagates through a subwavelength aperture and is heavily diffracted on exit and partially couples into a surface plasmon polariton and a surface wave propagating along the surface of the lens. Interference between the diffracted wave and re-emission from a grating patterned on the surface produces a highly collimated beam. We show for the first time a geometry at which a lens of this type can be used at telecommunication wavelengths (lambda = 1.55 mu m) and identify the light coupling and re-emission mechanisms involved. Measured beam profile results at varying incident wavelengths show excellent agreement with Lumerical FDTD simulation results. (C) 2014 Optical Society of America

Original language	English
Pages (from-to)	3786-3789
Number of pages	4
Journal	Optics Letters
Volume	39
Issue number	13
DOIs	https://doi.org/10.1364/OL.39.003786
Publication status	Published - 1 Jul 2014

Keywords

LASERS
LIGHT

Access to Document

10.1364/OL.39.003786

Projects

1 Finished

Integrated Tunable Flat Lenses (TuneFuL)

Cryan, M. J.

17/05/12 → 17/05/15

Project: Research

Cite this

Pugh, J. R., Stokes, J. L., Lopez-Garcia, M., Gan, C-H., Nash, G. R., Rarity, J. G., Cryan, M. J., & Lopez Garcia, M. (2014). Slot-grating flat lens for telecom wavelengths. Optics Letters, 39(13), 3786-3789. https://doi.org/10.1364/OL.39.003786

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abstract = "We present a stand-alone beam-focusing flat lens for use in the telecommunications wavelength range. Light incident on the back surface of the lens propagates through a subwavelength aperture and is heavily diffracted on exit and partially couples into a surface plasmon polariton and a surface wave propagating along the surface of the lens. Interference between the diffracted wave and re-emission from a grating patterned on the surface produces a highly collimated beam. We show for the first time a geometry at which a lens of this type can be used at telecommunication wavelengths (lambda = 1.55 mu m) and identify the light coupling and re-emission mechanisms involved. Measured beam profile results at varying incident wavelengths show excellent agreement with Lumerical FDTD simulation results. (C) 2014 Optical Society of America",

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AU - Pugh, Jonathan R

AU - Stokes, Jamie L

AU - Lopez-Garcia, Martin

AU - Gan, Choon-How

AU - Nash, Geoff R

AU - Rarity, John G

AU - Cryan, Martin J

AU - Lopez Garcia, Martin

PY - 2014/7/1

Y1 - 2014/7/1

N2 - We present a stand-alone beam-focusing flat lens for use in the telecommunications wavelength range. Light incident on the back surface of the lens propagates through a subwavelength aperture and is heavily diffracted on exit and partially couples into a surface plasmon polariton and a surface wave propagating along the surface of the lens. Interference between the diffracted wave and re-emission from a grating patterned on the surface produces a highly collimated beam. We show for the first time a geometry at which a lens of this type can be used at telecommunication wavelengths (lambda = 1.55 mu m) and identify the light coupling and re-emission mechanisms involved. Measured beam profile results at varying incident wavelengths show excellent agreement with Lumerical FDTD simulation results. (C) 2014 Optical Society of America

AB - We present a stand-alone beam-focusing flat lens for use in the telecommunications wavelength range. Light incident on the back surface of the lens propagates through a subwavelength aperture and is heavily diffracted on exit and partially couples into a surface plasmon polariton and a surface wave propagating along the surface of the lens. Interference between the diffracted wave and re-emission from a grating patterned on the surface produces a highly collimated beam. We show for the first time a geometry at which a lens of this type can be used at telecommunication wavelengths (lambda = 1.55 mu m) and identify the light coupling and re-emission mechanisms involved. Measured beam profile results at varying incident wavelengths show excellent agreement with Lumerical FDTD simulation results. (C) 2014 Optical Society of America

KW - LASERS

KW - LIGHT

U2 - 10.1364/OL.39.003786

DO - 10.1364/OL.39.003786

M3 - Article (Academic Journal)

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