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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Vol. 21, Iss. 1 — Jan. 1, 2004
  • pp: 208–213

Random laser action in organic–inorganic nanocomposites

Demetrios Anglos, Andreas Stassinopoulos, Rabindra N. Das, Giannis Zacharakis, Maria Psyllaki, Rachel Jakubiak, Richard A. Vaia, Emmanuel P. Giannelis, and Spiros H. Anastasiadis  »View Author Affiliations


JOSA B, Vol. 21, Issue 1, pp. 208-213 (2004)
http://dx.doi.org/10.1364/JOSAB.21.000208


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Abstract

Random laser action is demonstrated in organic–inorganic, disordered hybrid materials consisting of ZnO semiconductor nanoparticles dispersed in an optically inert polymer matrix. The ZnO particles provide both the gain and the strong scattering power that leads to light trapping due to multiple elastic scattering, whereas the polymer matrix offers ease of material fabrication and processability in view of potential applications. Excitation of the nanohybrids by a laser pulse with duration shorter than the ZnO photoluminescence lifetime leads to a dramatic increase in the emitted light intensity accompanied by a significant spectral and temporal narrowing above a certain threshold of the excitation energy density. Critical laser and material parameters that influence the observed laser-like emission behavior are investigated in a series of nanocomposites.

© 2004 Optical Society of America

OCIS Codes
(140.6630) Lasers and laser optics : Superradiance, superfluorescence
(160.0160) Materials : Materials
(160.2540) Materials : Fluorescent and luminescent materials
(160.5470) Materials : Polymers
(290.4210) Scattering : Multiple scattering
(300.6280) Spectroscopy : Spectroscopy, fluorescence and luminescence

Citation
Demetrios Anglos, Andreas Stassinopoulos, Rabindra N. Das, Giannis Zacharakis, Maria Psyllaki, Rachel Jakubiak, Richard A. Vaia, Emmanuel P. Giannelis, and Spiros H. Anastasiadis, "Random laser action in organic–inorganic nanocomposites," J. Opt. Soc. Am. B 21, 208-213 (2004)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-21-1-208

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