Patterning of non-linear optical crystals in glass by laser-induced crystallization

T. Komatsu, R. Ihara, T. Honma, Y. Benino, R. Sato, H. G. Kim, T. Fujiwara

Research output: Contribution to journalArticlepeer-review

99 Citations (Scopus)

Abstract

This paper reports recent progress in the patterning of non-linear optical crystals on the glass surface by laser irradiation. Two techniques for the writing of crystal lines have been developed, i.e., rare-earth (samarium) atom heat processing and transition metal atom heat processing, in which a continuous wave Nd:YAG laser (wavelength: λ.= 1064 nm) is irradiated to the glasses containing rare-earth (RE: Sm3+, Dy3+) ions or transition metal (TM: Ni2+, Fe2+, V4+) ions. The writing of crystal lines such as ß-BaB2O4, Sm xBi1-xBO3, and Ba2TiGe 2O8 showing second harmonic generations has been successful. It is clarified from the azimuthal dependence of second harmonic intensity and polarized micro-Raman scattering spectra that crystal Unes consist of highly oriented crystals along the crystal line growth direction. It is also possible to write two-dimensional crystal bending or curved lines by just changing the laser scanning direction. The mechanism of the laser-induced crystallization has been proposed.

Original languageEnglish
Pages (from-to)699-705
Number of pages7
JournalJournal of the American Ceramic Society
Volume90
Issue number3
DOIs
Publication statusPublished - Mar 1 2007
Externally publishedYes

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

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