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

Authors :
Sugita, H.
Honma, T.
Benino, Y.
Komatsu, T.
Source :
Solid State Communications. Aug2007, Vol. 143 Issue 6/7, p280-284. 5p.
Publication Year :
2007

Abstract

Abstract: Lithium niobate LiNbO3 crystals were formed at the surface of CuO (1 mol%)-doped 25Li2O–25Nb2O5–50TeO2 glass (mol%) by heat-assisted (150 ∘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 -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. [Copyright &y& Elsevier]

Details

Language :
English
ISSN :
00381098
Volume :
143
Issue :
6/7
Database :
Academic Search Index
Journal :
Solid State Communications
Publication Type :
Academic Journal
Accession number :
25943192
Full Text :
https://doi.org/10.1016/j.ssc.2007.06.002