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Subwavelength line imaging using plasmonic waveguides

Subwavelength line imaging using plasmonic waveguides
Subwavelength line imaging using plasmonic waveguides
We investigate the subwavelength imaging capacity of a two-dimensional fanned-out plasmonic waveguide array, formed by air channels surrounded by gold metal layers for operation at near-infrared wavelengths, via finite element simulations. High resolution is achieved on one side of the device by tapering down the channel width while simultaneously maintaining propagation losses of a few dB. On the other, low resolution side, output couplers are designed to optimize coupling to free space and to minimize channel cross talk via surface plasmons. Point sources separated by lambda/15 can still be clearly distinguished. Moreover, up two 90% of the power of a point dipole is coupled to the device. Applications are high-resolution linear detector arrays and, by operating the device in reverse, high-resolution optical writing.
0018-9197
1-7
Podoliak, Nina
0908b951-00a7-48a5-bc82-631640910b9c
Horak, Peter
520489b5-ccc7-4d29-bb30-c1e36436ea03
Prangsma, Jord C.
f7c7b82c-5a67-4a38-b203-2a3e4df2c2bf
Pinkse, Pepijn W.H.
2e9f21e5-0ce1-4d97-b390-f35009e7c2ac
Podoliak, Nina
0908b951-00a7-48a5-bc82-631640910b9c
Horak, Peter
520489b5-ccc7-4d29-bb30-c1e36436ea03
Prangsma, Jord C.
f7c7b82c-5a67-4a38-b203-2a3e4df2c2bf
Pinkse, Pepijn W.H.
2e9f21e5-0ce1-4d97-b390-f35009e7c2ac

Podoliak, Nina, Horak, Peter, Prangsma, Jord C. and Pinkse, Pepijn W.H. (2015) Subwavelength line imaging using plasmonic waveguides. IEEE Journal of Quantum Electronics, 51 (2), 1-7. (doi:10.1109/JQE.2014.2385153).

Record type: Article

Abstract

We investigate the subwavelength imaging capacity of a two-dimensional fanned-out plasmonic waveguide array, formed by air channels surrounded by gold metal layers for operation at near-infrared wavelengths, via finite element simulations. High resolution is achieved on one side of the device by tapering down the channel width while simultaneously maintaining propagation losses of a few dB. On the other, low resolution side, output couplers are designed to optimize coupling to free space and to minimize channel cross talk via surface plasmons. Point sources separated by lambda/15 can still be clearly distinguished. Moreover, up two 90% of the power of a point dipole is coupled to the device. Applications are high-resolution linear detector arrays and, by operating the device in reverse, high-resolution optical writing.

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More information

Accepted/In Press date: 23 December 2014
Published date: February 2015
Organisations: Optoelectronics Research Centre, Quantum, Light & Matter Group

Identifiers

Local EPrints ID: 376880
URI: https://eprints.soton.ac.uk/id/eprint/376880
ISSN: 0018-9197
PURE UUID: 6eb5c780-a74a-4a34-bda8-ea184e42135d
ORCID for Nina Podoliak: ORCID iD orcid.org/0000-0002-3146-0355
ORCID for Peter Horak: ORCID iD orcid.org/0000-0002-8710-8764

Catalogue record

Date deposited: 11 May 2015 11:08
Last modified: 29 Aug 2019 00:45

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