Formation of LiNbO3 crystals at the surface of TeO2 -based glass by YAG laser-induced crystallization

H. Sugita, T. Honma, Y. Benino, T. Komatsu

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

Lithium niobate LiNbO3 crystals were formed at the surface of CuO (1 mol%)-doped 25Li2O-25Nb2O5-50TeO2 glass (mol%) by heat-assisted (150 {ring operator}C) continuous-wave Nd:YAG laser irradiations with a wavelength of λ=1064 nm. Nd:YAG laser energies absorbed by Cu2+ ions (d-d transitions) were converted to the lattice vibrations of surrounding Cu2+ ions (nonradiative relaxations), giving the increase in the temperature of the laser irradiated local region. The formation of LiNbO3 crystals was confirmed from micro-Raman scattering spectra. For the line patterned by a laser scanning with a power of 0.59 W and a speed of 6 μm/s, the possibility of a c-axis orientation of LiNbO3 crystals along the laser scanning direction was proposed. The present study demonstrates that the combination of Cu2+ and Nd:YAG laser with λ=1064 nm, i.e. transition metal atom heat processing, is effective in inducting LiNbO3 crystals in TeO2-based glasses.

Original languageEnglish
Pages (from-to)280-284
Number of pages5
JournalSolid State Communications
Volume143
Issue number6-7
DOIs
Publication statusPublished - Aug 1 2007
Externally publishedYes

Keywords

  • A. LiNbO
  • B. Laser processing
  • C. Raman scattering spectrum
  • D. Phase transitions

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

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