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

被引：32

作者：

Sugita, H. ^{[1
]}

Honma, T. ^{[1
]}

Benino, Y. ^{[1
]}

Komatsu, T. ^{[1
]}

机构：

[1] Nagaoka Univ Technol, Dept Mat Sci & Technol, Nagaoka, Niigata 9402188, Japan

来源：

SOLID STATE COMMUNICATIONS | 2007年 / 143卷 / 6-7期

关键词：

LiNbO3; laser processing; Raman scattering spectrum; phase transitions;

D O I：

10.1016/j.ssc.2007.06.002

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Lithium niobate LiNbO3 crystals were formed at the surface of CuO (1 mol%)-doped 25Li(2)O-25Nb(2)O(5)-50TeO(2) glass (mol%) by heat-assisted (150 degrees C continuous-wave Nd:YAG laser irradiations with a wavelength of lambda = 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 mu m/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 1064 nm, i.e. transition metal atom heat processing, is effective in inducting LiNbO3 crystals in TeO2-based glasses. (c) 2007 Elsevier Ltd. All rights reserved.

引用

页码：280 / 284

页数：5

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