Discrete spectrum of anti-stokes emission from metal particle-adsorbate complexes in a microcavity

Vladimir P. Drachev, Won Tae Kim, Eldar N. Khaliullin, Fedda Al-Zoubi, Viktor A. Podolskiy, Vladimir P. Safonov, Vladimir M. Shalaev, Robert L. Armstrong

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

This report presents the discovery of greatly enhanced, broad-range, multiphoton excited emission from Ag aggregate-adsorbate complexes seeded into a cylindrical microcavity. The emission spectrum contains descrete peaks spanning the wavelength range from the 632 nm HeNe laser exciting wavelength down to 200 nm. Observation of multiphoton processes at the low exciting light intensity (20 W/cm2) became possible due to using a fractal-microcavity composite, where coupling the localized plasmon modes in fractal aggregates with microcavity resonances is provided. The important role of the multiphoton resonant transitions between discrete states of a finite-size metal particle in enhanced local fields is shown. Analysis, based on the model of a spherical potential well, shows that the observed spectra contain fingerprints of the quantum size effect.

Original languageEnglish
Pages (from-to)380-389
Number of pages10
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume4748
DOIs
Publication statusPublished - 2002
Externally publishedYes

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