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Proceedings Paper

Laser resonators formed by two nanoparticles
Author(s): Xiaohua Wu; Wei Fang; Alexey Yamilov; Andrey A. Chabanov; Hui Cao
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Paper Abstract

We demonstrate lasing in a cavity formed by two Mie scatterers in a dye colloidal solution. Like a Fabry-Perot cavity, the feedback mechanism for lasing is based on back scattering from each particle. Strong light amplification in between the scatterer pair not only compensate its large diffraction loss, but also help to choose the particular pair out of many scatterers in the suspension to form the laser cavity. Such cavity selection is facilitated by a careful designed cone shaped excitation geometry. Detailed experimental studies on the threshold behavior, spectral characteristic of lasing emission, and output directionality are presented. A simple theoretical model provides qualitative explanation for this lasing phenomenon.

Paper Details

Date Published: 22 February 2006
PDF: 11 pages
Proc. SPIE 6101, Laser Beam Control and Applications, 61010M (22 February 2006); doi: 10.1117/12.647859
Show Author Affiliations
Xiaohua Wu, Northwestern Univ. (United States)
Wei Fang, Northwestern Univ. (United States)
Alexey Yamilov, Northwestern Univ. (United States)
Univ. of Missouri Rolla (United States)
Andrey A. Chabanov, Northwestern Univ. (United States)
Univ. of Texas, San Antonio (United States)
Hui Cao, Northwestern Univ. (United States)

Published in SPIE Proceedings Vol. 6101:
Laser Beam Control and Applications
Steven J. Davis; Alexis V. Kudryashov; Adolf Giesen; Detlef Nickel; Michael C. Heaven; Alan H. Paxton; Vladimir S. Ilchenko; J. Thomas Schriempf, Editor(s)

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