Chemically etched sharpened tip of transparent crystallized glass fibers with nonlinear optical Ba2TiSi2O8 nanocrystals

Itaru Enomoto, Yasuhiko Benino, Takumi Fujiwara, Takayuki Komatsu

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)


Glass fibers with a diameter of ∼100 μm are drawn by just pulling up melts of 40BaO · 20TiO2 · 40SiO2 glass, and transparent crystallized glass fibers consisting of nonlinear optical fresnoite Ba2TiSi2O8 nanocrystals (particle size: ∼100-200 nm) are fabricated by crystallization of glass fibers. Precursor glass fibers and nanocrystallized glass fibers are etched chemically using a meniscus method, in which an etching solution of 0.1 wt%-HF/hexane is used. Glass fibers with sharpened tips (e.g., the taper length is ∼L = 200 μm and the tip angle is ∼θ=23°) are obtained. It is found that etched nanocrystallized glass fibers also have sharpened tips (L = 50 μm, θ=80°). Compared with precursor glass fibers, nanocrystallized glass fibers show a high resistance against chemical etching in a 0.1 wt%HF solution. Although sharpened tips in nanocrystallized glass fibers do not have nanoscaled apertures, the present study suggests that nanocrystallized glass fibers showing second harmonic generations would have a potential for fiber-type light control optical devices.

Original languageEnglish
Pages (from-to)374-378
Number of pages5
JournalJournal of the Ceramic Society of Japan
Issue number1342
Publication statusPublished - Jun 2007
Externally publishedYes


  • Chemical etching
  • Glass fiber
  • Nanocrystal
  • Second harmonic generation

ASJC Scopus subject areas

  • Ceramics and Composites
  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry


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