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首页> 外文期刊>Solid State Communications >Formation of LiNbO_3 crystals at the surface of TeO_2-based glass by YAG laser-induced crystallization
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Formation of LiNbO_3 crystals at the surface of TeO_2-based glass by YAG laser-induced crystallization

机译：YAG激光诱导结晶在TeO_2基玻璃表面形成LiNbO_3晶体

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摘要

Lithium niobate LiNbO_3 crystals were formed at the surface of CuO (1 mol%)-doped 25Li_2O-25Nb_2O_5-50TeO_2 glass (mol%) by heat-assisted (150 ℃) continuous-wave Nd:YAG laser irradiations with a wavelength of λ = 1064 nm. Nd:YAG laser energies absorbed by Cu~(2+) ions (d-d transitions) were converted to the lattice vibrations of surrounding Cu~(2+) ions (nonradiative relaxations), giving the increase in the temperature of the laser irradiated local region. The formation of LiNbO_3 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 LiNbO_3 crystals along the laser scanning direction was proposed. The present study demonstrates that the combination of Cu~(2+) and Nd:YAG laser with λ = 1064 nm, i.e. transition metal atom heat processing, is effective in inducting LiNbO_3 crystals in TeO_2-based glasses.
机译：通过加热辅助（150℃）连续波Nd：YAG激光照射，在波长λ=的CuO（1 mol％）掺杂的25Li_2O-25Nb_2O_5-50TeO_2（mol％）的表面上形成铌酸锂LiNbO_3晶体。 1064 nm。被Cu〜（2+）离子吸收的Nd：YAG激光能量（dd跃迁）被转换为周围Cu〜（2+）离子的晶格振动（非辐射弛豫），从而使激光辐照局部区域的温度升高。从微拉曼散射光谱证实了LiNbO_3晶体的形成。对于通过以0.59W的功率和6μm/ s的速度的激光扫描来图案化的线，提出了LiNbO_3晶体沿激光扫描方向的c轴取向的可能性。本研究表明，Cu〜（2+）和Nd：YAG激光与λ= 1064 nm的结合，即过渡金属原子热处理，可有效诱导TeO_2基玻璃中的LiNbO_3晶体。

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