Engineering the emission statistics of plasmonic lasers

Dasuni Lelwala Gamacharige, Malin Premaratne

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review


A noble metal nanoparticle (MNP)- quantum emitter (QE) composite nanostructure operates as a nanoscale counterpart of a conventional laser, and serves as an ultra-compact coherent source of surface plasmons, which holds the potential of bolstering device miniaturization. Equivalent to a standard laser, the MNP acts as the resonator, and the gain medium consists of pumped QEs. In this work, we demonstrate the possibility of engineering the emission statistics of such a plasmonic laser, to meet prerequisites set by its intended application. We perform a comprehensive analysis on plasmonic statistics of a spheroidal MNP-QE composite nanostructure, through reduced density matrix formalism, and examine the tunability of the key observable quantities against various system parameters including the geometry of the MNP, the rate of excitation, and the dielectric constant of the submerging medium, to gather the insights for customizing and optimizing this composite nanostructure for a particular application. For a given frequency of operation, our simulations offer a guide for the most suitable shape of the resonator, and provides the estimations for the expected energy output and its coherence, for a range of input power. Furthermore, it can be extended to assist in making the material choices. In essence, our work facilitates tailoring efficient, coherent and tunable plasmonic laser devices to power-up many promising nanoscale applications.

Original languageEnglish
Title of host publicationProceedings of SPIE
Subtitle of host publicationNanophotonics VIII
EditorsDavid L. Andrews, Angus J. Bain, Martti Kauranen, Jean-Michel Nunzi
Place of PublicationBellingham WA USA
PublisherSPIE - International Society for Optical Engineering
Number of pages8
ISBN (Electronic)9781510634633
ISBN (Print)9781510634626
Publication statusPublished - 2020
EventSPIE Photonics Europe 2020 - Virtual, Online, France
Duration: 6 Apr 202010 Apr 2020

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
PublisherSPIE - International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


ConferenceSPIE Photonics Europe 2020
CityVirtual, Online


  • Emission statistics
  • Metal nanoparticle
  • Plasmon statistics
  • Plasmonic laser
  • Quantum emitters

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