Efficient coupling and field enhancement for the nano-scale: plasmonic needle

Alexander Normatov; Pavel Ginzburg; Nikolai Berkovitch; Gilad M. Lerman; Avner Yanai; Uriel Levy; Meir Orenstein

doi:10.1364/OE.18.014079

Efficient coupling and field enhancement for the nano-scale: plasmonic needle

Alexander Normatov^*, Pavel Ginzburg, Nikolai Berkovitch, Gilad M. Lerman, Avner Yanai, Uriel Levy, Meir Orenstein

^*Corresponding author for this work

Physics

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

39 Citations (Scopus)

Abstract

Theoretical demonstration of efficient coupling and power concentration of radially-polarized light on a conical tip of plasmonic needle is presented. The metallic needle is grown at the center of radial plasmonic grating, engraved in a metal surface. The electromagnetic field distribution was evaluated by Finite Elements and Finite-Difference-Time-Domain methods. The results show that the field on the tip of the needle is significantly enhanced compared to the field impinging on the grating. The power enhancement exhibited a resonant behavior as a function of needle length and reached values of similar to 10(4). Test samples for few types of characterization schemes were fabricated. (C) 2010 Optical Society of America

Original language	English
Pages (from-to)	14079-14086
Number of pages	8
Journal	OPTICS EXPRESS
Volume	18
Issue number	13
DOIs	https://doi.org/10.1364/OE.18.014079
Publication status	Published - 21 Jun 2010

Keywords

RADIALLY POLARIZED-LIGHT
POLARITONS
SURFACE-PLASMONS
LENS

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10.1364/OE.18.014079

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title = "Efficient coupling and field enhancement for the nano-scale: plasmonic needle",

abstract = "Theoretical demonstration of efficient coupling and power concentration of radially-polarized light on a conical tip of plasmonic needle is presented. The metallic needle is grown at the center of radial plasmonic grating, engraved in a metal surface. The electromagnetic field distribution was evaluated by Finite Elements and Finite-Difference-Time-Domain methods. The results show that the field on the tip of the needle is significantly enhanced compared to the field impinging on the grating. The power enhancement exhibited a resonant behavior as a function of needle length and reached values of similar to 10(4). Test samples for few types of characterization schemes were fabricated. (C) 2010 Optical Society of America",

keywords = "RADIALLY POLARIZED-LIGHT, POLARITONS, SURFACE-PLASMONS, LENS",

author = "Alexander Normatov and Pavel Ginzburg and Nikolai Berkovitch and Lerman, {Gilad M.} and Avner Yanai and Uriel Levy and Meir Orenstein",

year = "2010",

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doi = "10.1364/OE.18.014079",

language = "English",

volume = "18",

pages = "14079--14086",

journal = "OPTICS EXPRESS",

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TY - JOUR

T1 - Efficient coupling and field enhancement for the nano-scale: plasmonic needle

AU - Normatov, Alexander

AU - Ginzburg, Pavel

AU - Berkovitch, Nikolai

AU - Lerman, Gilad M.

AU - Yanai, Avner

AU - Levy, Uriel

AU - Orenstein, Meir

PY - 2010/6/21

Y1 - 2010/6/21

N2 - Theoretical demonstration of efficient coupling and power concentration of radially-polarized light on a conical tip of plasmonic needle is presented. The metallic needle is grown at the center of radial plasmonic grating, engraved in a metal surface. The electromagnetic field distribution was evaluated by Finite Elements and Finite-Difference-Time-Domain methods. The results show that the field on the tip of the needle is significantly enhanced compared to the field impinging on the grating. The power enhancement exhibited a resonant behavior as a function of needle length and reached values of similar to 10(4). Test samples for few types of characterization schemes were fabricated. (C) 2010 Optical Society of America

AB - Theoretical demonstration of efficient coupling and power concentration of radially-polarized light on a conical tip of plasmonic needle is presented. The metallic needle is grown at the center of radial plasmonic grating, engraved in a metal surface. The electromagnetic field distribution was evaluated by Finite Elements and Finite-Difference-Time-Domain methods. The results show that the field on the tip of the needle is significantly enhanced compared to the field impinging on the grating. The power enhancement exhibited a resonant behavior as a function of needle length and reached values of similar to 10(4). Test samples for few types of characterization schemes were fabricated. (C) 2010 Optical Society of America

KW - RADIALLY POLARIZED-LIGHT

KW - POLARITONS

KW - SURFACE-PLASMONS

KW - LENS

U2 - 10.1364/OE.18.014079

DO - 10.1364/OE.18.014079

M3 - Article

SN - 1094-4087

VL - 18

SP - 14079

EP - 14086

JO - OPTICS EXPRESS

JF - OPTICS EXPRESS

IS - 13

ER -

Efficient coupling and field enhancement for the nano-scale: plasmonic needle

Abstract

Keywords

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