Dependence of the multiphoton luminescence spectrum of single gold nanoparticles on the refractive index of the surrounding medium

Michael Ruosch, Dominik Marti, Patrick Stoller, Jaroslav Rička, Martin Frenz

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review


The physical mechanism underlying multiphoton luminescence in gold is still the subject of debate. To obtain a better understanding of the mechanism, experiments that study the luminescence spectra of single particles are necessary. In this study, the multiphoton luminescence spectrum was measured for surrounding media of different refractive indices. The resulting spectra of single gold nanospheres with diameters in the range of a few tens of nanometers were found to be strongly dominated by the absorption peak of the plasmon resonance. This is in agreement with the theory proposed by Boyd et al. (1986)1. According to Lorenz-Mie Theory, an increase in the refractive index of the surrounding medium results in a redshift of the plasmon resonance spectrum; a corresponding shift in the multiphoton luminescence spectrum has now been found experimentally.
Original languageEnglish
Title of host publicationProceedings of SPIE
Number of pages9
PublisherSPIE - International Society for Optical Engineering
Publication date2008
Article number70321T
ISBN (Print)9780819472526
Publication statusPublished - 2008
Externally publishedYes
EventPlasmonics 2008: Metallic Nanostructures and Their Optical Properties VI - San Diego, United States
Duration: 10 Aug 200814 Aug 2008
Conference number: 6


ConferencePlasmonics 2008
Country/TerritoryUnited States
CitySan Diego
SeriesProceedings of SPIE - The International Society for Optical Engineering


  • Applied Mathematics
  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Gold
  • Immersion oil
  • Luminescence
  • Multiphoton luminescence
  • Nanoparticles
  • Nanospheres
  • Plasmon resonance
  • Refractive index
  • Light refraction
  • Light sources
  • Multiphoton processes
  • Nanostructured materials
  • Nanostructures
  • Optical materials
  • Optical properties
  • Organic polymers
  • Plasmons
  • Refractometers
  • Resonance
  • Semiconductor quantum dots
  • Surface plasmon resonance
  • Vegetation
  • Absorption peaks
  • Gold nanoparticles
  • Gold nanospheres
  • Mie theories
  • Multiphoton luminescences
  • Physical mechanisms
  • Plasmon resonances
  • Single particles
  • Light emission


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