Millimeter-Scale Spatial Coherence from a Plasmon Laser.

Journal Article (Journal Article)

Coherent light sources have been demonstrated based on a wide range of nanostructures, however, little effort has been devoted to probing their underlying coherence properties. Here, we report long-range spatial coherence of lattice plasmon lasers constructed from a periodic array of gold nanoparticles and a liquid gain medium at room temperature. By combining spatial and temporal interferometry, we demonstrate millimeter-scale (∼1 mm) spatial coherence and picosecond (∼2 ps) temporal coherence. The long-range spatial coherence occurs even without the presence of strong coupling with the lattice plasmon mode extending over macroscopic distances in the lasing regime. This plasmonic lasing system thus provides a platform for understanding the emergence of long-range coherence from collections of nanoscale resonators and points toward novel types of distributed lasing sources.

Full Text

Duke Authors

Cited Authors

  • Hoang, TB; Akselrod, GM; Yang, A; Odom, TW; Mikkelsen, MH

Published Date

  • November 2017

Published In

Volume / Issue

  • 17 / 11

Start / End Page

  • 6690 - 6695

PubMed ID

  • 28956442

Electronic International Standard Serial Number (EISSN)

  • 1530-6992

International Standard Serial Number (ISSN)

  • 1530-6984

Digital Object Identifier (DOI)

  • 10.1021/acs.nanolett.7b02677


  • eng