Subwavelength line imaging using plasmonic waveguides

N. Podoliak, P. Horak, Jord Prangsma, Pepijn Willemszoon Harry Pinkse

Research output: Contribution to journalArticleAcademicpeer-review

2 Citations (Scopus)

Abstract

We investigate the subwavelength imaging capacity of a 2-D 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 decibels. 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 λ/15 can still be clearly distinguished. Moreover, up to 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.
Original languageEnglish
Article number7200107
Pages (from-to)7200107-
Number of pages7
JournalIEEE journal of quantum electronics
Volume51
Issue number2
DOIs
Publication statusPublished - 23 Dec 2015

Fingerprint

Plasmons
Telephone lines
Waveguides
Gold
Infrared radiation
waveguides
Detectors
Imaging techniques
Wavelength
high resolution
Air
Metals
tapering
plasmons
point sources
couplers
gold
dipoles
propagation
output

Keywords

  • METIS-313474
  • IR-98347

Cite this

Podoliak, N. ; Horak, P. ; Prangsma, Jord ; Pinkse, Pepijn Willemszoon Harry. / Subwavelength line imaging using plasmonic waveguides. In: IEEE journal of quantum electronics. 2015 ; Vol. 51, No. 2. pp. 7200107-.
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Subwavelength line imaging using plasmonic waveguides. / Podoliak, N.; Horak, P.; Prangsma, Jord; Pinkse, Pepijn Willemszoon Harry.

In: IEEE journal of quantum electronics, Vol. 51, No. 2, 7200107, 23.12.2015, p. 7200107-.

Research output: Contribution to journalArticleAcademicpeer-review

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AU - Horak, P.

AU - Prangsma, Jord

AU - Pinkse, Pepijn Willemszoon Harry

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Y1 - 2015/12/23

N2 - We investigate the subwavelength imaging capacity of a 2-D 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 decibels. 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 λ/15 can still be clearly distinguished. Moreover, up to 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.

AB - We investigate the subwavelength imaging capacity of a 2-D 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 decibels. 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 λ/15 can still be clearly distinguished. Moreover, up to 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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