Subwavelength light focusing with a single slit lens based on the spatial multiplexing of chirped surface gratings

Jianjie Dong; Juan Liu; Bin Hu; Jinghui Xie; Yongtian Wang

doi:10.1063/1.4861595

Subwavelength light focusing with a single slit lens based on the spatial multiplexing of chirped surface gratings

Jianjie Dong
, Juan Liu^*
, Bin Hu
, Jinghui Xie
, Yongtian Wang

^*Corresponding author for this work

Beijing Institute of Technology

Research output: Contribution to journal › Article › peer-review

Abstract

A lens consisting of a subwavelength slit engraved into a metal film and surrounded by periodic surface gratings and spatial multiplexing chirped surface gratings (SMCSGs) for focusing light is proposed. The focal length of the lens can be accurately designed and tuned by controlling the periods of the local gratings of the SMCSGs. Simulation results show that a subwavelength beam spot can be produced by the lens at a distance of several times the incident wavelength from the slit and the difference between the simulated and designed focal lengths can be reduced to below 3% of the designed focal length.

Original language	English
Article number	011115
Journal	Applied Physics Letters
Volume	104
Issue number	1
DOIs	https://doi.org/10.1063/1.4861595
Publication status	Published - 6 Jan 2014
Externally published	Yes

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10.1063/1.4861595

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title = "Subwavelength light focusing with a single slit lens based on the spatial multiplexing of chirped surface gratings",

abstract = "A lens consisting of a subwavelength slit engraved into a metal film and surrounded by periodic surface gratings and spatial multiplexing chirped surface gratings (SMCSGs) for focusing light is proposed. The focal length of the lens can be accurately designed and tuned by controlling the periods of the local gratings of the SMCSGs. Simulation results show that a subwavelength beam spot can be produced by the lens at a distance of several times the incident wavelength from the slit and the difference between the simulated and designed focal lengths can be reduced to below 3\% of the designed focal length.",

author = "Jianjie Dong and Juan Liu and Bin Hu and Jinghui Xie and Yongtian Wang",

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T1 - Subwavelength light focusing with a single slit lens based on the spatial multiplexing of chirped surface gratings

AU - Dong, Jianjie

AU - Liu, Juan

AU - Hu, Bin

AU - Xie, Jinghui

AU - Wang, Yongtian

PY - 2014/1/6

Y1 - 2014/1/6

N2 - A lens consisting of a subwavelength slit engraved into a metal film and surrounded by periodic surface gratings and spatial multiplexing chirped surface gratings (SMCSGs) for focusing light is proposed. The focal length of the lens can be accurately designed and tuned by controlling the periods of the local gratings of the SMCSGs. Simulation results show that a subwavelength beam spot can be produced by the lens at a distance of several times the incident wavelength from the slit and the difference between the simulated and designed focal lengths can be reduced to below 3% of the designed focal length.

AB - A lens consisting of a subwavelength slit engraved into a metal film and surrounded by periodic surface gratings and spatial multiplexing chirped surface gratings (SMCSGs) for focusing light is proposed. The focal length of the lens can be accurately designed and tuned by controlling the periods of the local gratings of the SMCSGs. Simulation results show that a subwavelength beam spot can be produced by the lens at a distance of several times the incident wavelength from the slit and the difference between the simulated and designed focal lengths can be reduced to below 3% of the designed focal length.

UR - https://www.scopus.com/pages/publications/105048368839

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DO - 10.1063/1.4861595

M3 - Article

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VL - 104

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 1

M1 - 011115

ER -

Subwavelength light focusing with a single slit lens based on the spatial multiplexing of chirped surface gratings

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