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Updated: Jun 23, 2026

Determination of the Excitation and Coupling Rates Between Light Emitters and Surface Plasmon Polaritons
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Femtosecond surface plasmon interferometry.

Vasily V Temnov1, Keith Nelson, Gaspar Armelles

  • 1Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA. temnov@mit.edu

Optics Express
|May 13, 2009
PubMed
Summary
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We developed a new plasmonic microinterferometer for femtosecond measurements. This device precisely tracks changes in gold

Area of Science:

  • Optics and Photonics
  • Materials Science
  • Ultrafast Spectroscopy

Background:

  • Plasmonic interferometry enables probing ultrafast phenomena.
  • Existing methods often require multiple setups or wavelengths.
  • Distinguishing real and imaginary dielectric functions is challenging.

Purpose of the Study:

  • To introduce a novel plasmonic microinterferometer geometry.
  • To enable single-wavelength interferometric measurements.
  • To achieve unambiguous discrimination of dielectric function components.

Main Methods:

  • Fabrication of a tilted slit-groove plasmonic microinterferometer.
  • Femtosecond time-resolved optical pump-probe spectroscopy.
  • Analysis of interferometric signals to extract optical properties.

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Femtosecond Laser Filaments for Use in Sub-Diffraction-Limited Imaging and Remote Sensing
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Published on: April 25, 2019

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Last Updated: Jun 23, 2026

Determination of the Excitation and Coupling Rates Between Light Emitters and Surface Plasmon Polaritons
07:39

Determination of the Excitation and Coupling Rates Between Light Emitters and Surface Plasmon Polaritons

Published on: July 21, 2018

Interfacial Molecular-level Structures of Polymers and Biomacromolecules Revealed via Sum Frequency Generation Vibrational Spectroscopy
09:43

Interfacial Molecular-level Structures of Polymers and Biomacromolecules Revealed via Sum Frequency Generation Vibrational Spectroscopy

Published on: August 13, 2019

Femtosecond Laser Filaments for Use in Sub-Diffraction-Limited Imaging and Remote Sensing
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Femtosecond Laser Filaments for Use in Sub-Diffraction-Limited Imaging and Remote Sensing

Published on: April 25, 2019

Main Results:

  • Demonstration of femtosecond plasmonic interferometry with the novel geometry.
  • Successful single-wavelength operation of the microinterferometer.
  • Unambiguous separation of real and imaginary parts of the dielectric function.
  • Monitoring of sub-picosecond hot electron dynamics in gold.

Conclusions:

  • The novel tilted slit-groove geometry offers a versatile platform for plasmonic interferometry.
  • This approach simplifies ultrafast optical measurements.
  • It provides new capabilities for characterizing dynamic changes in material properties.