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Related Experiment Video

Updated: May 28, 2026

Fabrication of Zero Mode Waveguides for High Concentration Single Molecule Microscopy

Fabrication of Zero Mode Waveguides for High Concentration Single Molecule Microscopy

Published on: May 12, 2020

Strongly enhanced molecular fluorescence inside a nanoscale waveguide gap.

Volker J Sorger¹, Nitipat Pholchai, Ertugrul Cubukcu

¹NSF Nanoscale Science and Engineering Center, 3112 Etcheverry Hall, University of California, Berkeley, California 94720, United States.

|October 8, 2011

Summary

We achieved 60x enhanced light-matter interaction for molecules using plasmonic waveguides. This breakthrough enables efficient on-chip photon sources and quantum information transfer.

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Last Updated: May 28, 2026

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Published on: April 26, 2014

Area of Science:

Photonics
Plasmonics
Quantum Optics

Background:

Plasmonic waveguides offer nanoscale optical confinement.
Enhanced light-matter interaction is crucial for quantum technologies and photonics.

Purpose of the Study:

To experimentally demonstrate enhanced light-matter interaction using plasmonic waveguides.
To investigate spontaneous emission rate enhancements and emission coupling efficiency.

Main Methods:

Placing molecules within the nanometer-scale gap of a plasmonic waveguide.
Measuring spontaneous emission rates and coupling efficiencies.

Main Results:

Observed spontaneous emission rate enhancements of up to 60 times.
Demonstrated nonresonant enhancement overcoming bandwidth limitations.
Showed 85% of molecular emission coupled into the waveguide.

Conclusions:

Plasmonic waveguides enable significant light-matter interaction enhancement at the molecular scale.
This approach is promising for integrated photon sources, quantum information transfer, and solid-state lighting.