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Related Experiment Video

Updated: May 21, 2026

Performing Spectroscopy on Plasmonic Nanoparticles with Transmission-Based Nomarski-Type Differential Interference Contrast Microscopy

Performing Spectroscopy on Plasmonic Nanoparticles with Transmission-Based Nomarski-Type Differential Interference Contrast Microscopy

Published on: June 5, 2019

Spectral-interference microscopy for characterization of functional plasmonic elements.

Christian Rewitz¹, Thomas Keitzl, Philip Tuchscherer

¹Institut für Physikalische und Theoretische Chemie, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany.

|June 21, 2012

Summary

This summary is machine-generated.

We developed a novel method using confocal microscopy and spectral interferometry to precisely measure plasmonic responses in nanostructures. This technique accurately captures the timing of propagating plasmons, crucial for advancing nanoscale optical circuits.

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Last Updated: May 21, 2026

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Measurement of Scattering Nonlinearities from a Single Plasmonic Nanoparticle

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Published on: January 3, 2016

Area of Science:

* Nanophotonics and Plasmonics
* Optical Metrology

Background:

* Noble-metal nanostructures support plasmonic modes for subwavelength electric-field confinement.
* These modes are key for developing nanoscale integrated optical circuits.

Purpose of the Study:

* To develop and detail a method for measuring spectral and spatial response functions of plasmonic elements.
* To accurately extract timing information of propagating plasmons.

Main Methods:

* Combination of a confocal microscope setup with spectral interferometry detection.
* Detailed discussion of setup, data acquisition, and evaluation using silver nanowire experiments.
* Experimental calibration of setup-inherent signal delay with 1 fs accuracy.

Main Results:

* Accurate extraction of timing information for propagating plasmons.
* Demonstration of the method's capability to measure spectral and spatial response functions.
* Successful application to silver nanowires, enabling precise timing measurements.

Conclusions:

* The developed method provides accurate timing information for propagating plasmons.
* This technique is valuable for determining plasmon dispersion and group velocity in nanostructures.
* The method can be extended to study nonlinear plasmonic phenomena.