Random lasing films from multifunctional charged optical silica particles

Hee Won Shin, Seung Lim Oh, Laurent Galmiche, Béatrice Lama, Pierre Audebert, Yong Rok Kim

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Abstract

Multifunctional SiO2 particles with charged and fluorescent properties were synthesized and their films with different thickness were prepared using electrophoretic deposition for random lasing. In case of 50-μm-thick film, when the excitation energy density increases above 25μJ/cm2, spectral narrowing and nonlinear increasing of intensity were observed. To get more information on lasing, single-shot spectrum was measured. Finally, the dependence of the lasing behavior, including the recognition of the existence of a threshold on the film thickness was demonstrated.

Original languageEnglish
Pages (from-to)S57-S61
JournalSurface and Coatings Technology
Volume205
Issue numberSUPPL. 1
DOIs
Publication statusPublished - 2010 Dec 25

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All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

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