Encapsulation of H aggregates in silica film with high nonlinear optical coefficient (χ3 = 3.0 × 10-8 esu) by a simple sol-gel method

Haoshen Zhou, Takashi Watanabe, Akihiro Mito, Itaru Honma, Keisuke Asai, Kenkichi Ishigure

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)

Abstract

We first synthesized a thin silica film encapsulated with condensed H aggregates of pseudisocyanine dyes (PIC) cyanine bromide dyes by a simple sol-gel method. The high optical nonlinearity (χ3=3.0 × 10-8 esu) of the film at the resonance wavelength ( = 436 nm) of the H aggregates was first observed by a Z-scan method using a 180-fs pulse laser. The net | χ(3) | value of pure H aggregates should be much larger than 3.0 × 10-8 esu according to the doping ratio of H aggregates in silica film.

Original languageEnglish
Pages (from-to)589-593
Number of pages5
JournalMaterials Letters
Volume57
Issue number3
DOIs
Publication statusPublished - 2002 Dec
Externally publishedYes

Keywords

  • H aggregates
  • Optical nonlinearity
  • Silica film
  • Sol-gel

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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