Broadband near-field interference spectroscopy of metal nanoparticles using a femtosecond white-light continuum

A. A. Mikhailovsky, M. A. Petruska, M. I. Stockman, V. I. Klimov

Research output: Contribution to journalArticle

61 Citations (Scopus)

Abstract

We demonstrate a new nanoscale spectroscopic technique that combines subwavelength near-field imaging with broadband interference spectroscopy, We apply this technique to study phase spectra of surface plasmons in individual gold nanoparticles and nanoparticle dimers. Collective plasmon oscillations in selected nanostructures are excited by a femtosecond white-light continuum transmitted through a subwavelength aperture. The interference spectra detected in the far field result from the coherent superposition of the aperture field and the secondary field re-emitted by the nanostructure. The analysis of these spectra allows us to accurately measure the positions and damping constants of single-nanostructure plasmon resonances.

Original languageEnglish
Pages (from-to)1686-1688
Number of pages3
JournalOptics Letters
Volume28
Issue number18
DOIs
Publication statusPublished - Sep 15 2003

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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