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Updated: Feb 22, 2026

Measurement of Scattering Nonlinearities from a Single Plasmonic Nanoparticle

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Published on: January 3, 2016

Millimeter-Scale Spatial Coherence from a Plasmon Laser.

Thang B Hoang^1,2, Gleb M Akselrod^1,2, Ankun Yang^1,2

¹Center for Metamaterials and Integrated Plasmonics, ‡Department of Physics, and §Department of Electrical and Computer Engineering, Duke University , Durham, North Carolina 27708, United States.

|September 29, 2017

Summary

This summary is machine-generated.

Researchers achieved millimeter-scale spatial coherence in lattice plasmon lasers using gold nanoparticles and a liquid gain medium at room temperature. This breakthrough offers insights into nanoscale coherence and distributed lasing sources.

Keywords:

Plasmonics nanolasers spatial coherence temporal coherence

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Area of Science:

Nanophotonics
Plasmonics
Laser Physics

Background:

Coherent light sources are crucial for various applications.
Nanostructures offer potential for novel light sources.
Coherence properties of nanostructure-based lasers are underexplored.

Purpose of the Study:

To investigate the spatial and temporal coherence of lattice plasmon lasers.
To explore coherence properties in nanostructure-based light sources.
To understand the emergence of long-range coherence from nanoscale resonators.

Main Methods:

Fabrication of lattice plasmon lasers using gold nanoparticles and a liquid gain medium.
Utilizing spatial and temporal interferometry techniques.
Operating the system at room temperature.

Main Results:

Demonstrated millimeter-scale (∼1 mm) spatial coherence.
Achieved picosecond (∼2 ps) temporal coherence.
Observed long-range spatial coherence independent of strong lattice plasmon coupling.

Conclusions:

Lattice plasmon lasers exhibit significant long-range spatial coherence.
The system serves as a platform for studying coherence in nanoscale resonator arrays.
This work paves the way for novel distributed lasing sources.