Photoinduced phase transition in VO2 nanocrystals: Ultrafast control of surface-plasmon resonance

Matteo Rini, Andrea Cavalleri, Robert W. Schoenlein, René López, Leonard C. Feldman, Richard F. Haglund, Lynn A. Boatner, Tony E. Haynes

Research output: Contribution to journalArticlepeer-review

153 Citations (Scopus)

Abstract

We study the ultrafast insulator-to-metal transition in nanoparticles of VO2, obtained by ion implantation and self-assembly in silica. The nonmagnetic, strongly correlated compound VO2 undergoes a reversible phase transition, which can be photoinduced on an ultrafast time scale. In the nanoparticles, prompt formation of the metallic state results in the appearance of surface-plasmon resonance. We achieve large, ultrafast enhancement of optical absorption in the near-infrared spectral region that encompasses the wavelength range for optical-fiber communications. One can further tailor the response of the nanoparticles by controlling their shape.

Original languageEnglish
Pages (from-to)558-560
Number of pages3
JournalOptics Letters
Volume30
Issue number5
DOIs
Publication statusPublished - Mar 1 2005

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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