Stable and large second harmonic generation in sol-gel-processed poled silica waveguides doped with organic azo dye

Kazuyuki Izawa, Naomichi Okamoto, Okihiro Sugihara

Research output: Contribution to journalArticle

40 Citations (Scopus)

Abstract

Sol-gel-processed silica films doped with organic azo dye, Disperse Red 1 (DRl) in a higher concentration of 21.7 wt%, were prepared at a higher baking temperature with corona poling of higher voltage than in other reports to obtain stable and large second harmonic generation (SHG) and film strength. A large effective SHG coefficient of 75 pm/V was measured for the film of 0.2-Sm thickness at a fundamental wavelength of 1064 nm, and the value was unvaried for 700 h with no relaxation. Moreover, a waveguide SHG device of four-layer structure with DRl-doped sol-gel film as a top layer was fabricated for the first time, and Cherenkov-type phase-matched SHG was observed successfully.

Original languageEnglish
Pages (from-to)807-811
Number of pages5
JournalJapanese journal of applied physics
Volume32
Issue number8 R
DOIs
Publication statusPublished - 1993 Feb

Keywords

  • Cherenkov-type phase matching
  • Corona poling
  • Organic/inorganic complex film
  • Sol-gel processing
  • Stable and large second harmonic generation

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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