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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1 Citation (Scopus)

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

Bibliographical note

Funding Information:
Pr. Y-R Kim, Dr. H-W Shin, Pr. P Audebert, and Dr. L Galmiche want to thank the Korea Foundation for International Cooperation of Science & Technology (KICOS) through a grant provided by the Korean Ministry of Education, Science & Technology (MEST) in 2008 (grant no. K20609000011-08B0100-00110 ). This study was supported by a grant of the Korea Healthcare technology R&D Project, Ministry for Health, Welfare & Family Affairs (grant no. A085136 ) and the Korea Science and Engineering Foundation through the Pioneer Converging Technology Program (grant no. 2010-0002190 ), Republic of Korea.

All Science Journal Classification (ASJC) codes

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

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