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

被引：172

作者：

Rini, M

Cavalleri, A

Schoenlein, RW

López, R

Feldman, LC

Haglund, RF

Boatner, LA

Haynes, TE

机构：

[1] Lawrence Berkeley Lab, Div Sci Mat, Berkeley, CA 94720 USA

[2] Vanderbilt Univ, Dept Phys & Astron, Nashville, TN 37235 USA

[3] Oak Ridge Natl Lab, Condensed Matter Sci Div, Oak Ridge, TN 37831 USA

来源：

OPTICS LETTERS | 2005年 / 30卷 / 05期

关键词：

D O I：

10.1364/OL.30.000558

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

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. (C) 2005 Optical Society of America.

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页码：558 / 560

页数：3

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