Large second-order optical nonlinearity in 30BaO-15TiO2-55GeO2 surface crystallized glass with strong orientation
Large second-order optical nonlinearity in 30BaO-15TiO2-55GeO2 surface crystallized glass with strong orientation
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DOI：
10.1063/1.2210173
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发表时间：
2006-07-15
影响因子：
3.2
通讯作者：
Komatsu, Takayuki
中科院分区：
文献类型：
--
作者：
Masai, Hirokazu;Fujiwara, Takumi;Komatsu, Takayuki
用X射线衍射和Maker条纹技术研究了30 BaO-15 TiO（2）-55GeO（2）（BTG 55）微晶玻璃的表面晶相取向度与二阶光学极化率d的关系。BTG 55微晶玻璃的d系数与表面晶相的取向度有关。在720 ℃热处理3 h的透明BTG 55结晶玻璃中观察到取向的Fresnoite（Ba 2 TiGe 2 O 8）相。通过从表面抛光至几微米，在硅铝石相中沿沿着极性c轴的取向度随着去除厚度的增加而增加。在透明的BTG 55结晶玻璃中获得了24 +/- 3 pm/V的d系数，这是迄今报道的结晶玻璃中的最大值。
The correlation between the orientation degree of surface crystalline phase and the second-order optical susceptibility, d coefficient for second-harmonic generation, in 30BaO-15TiO(2)-55GeO(2) (BTG55) crystallized glass was investigated using x-ray diffraction measurements and a Maker fringe technique. The d coefficient in BTG55 crystallized glass was confirmed to depend on the orientation degree of the surface crystalline phase. An oriented fresnoite (Ba2TiGe2O8) phase was observed in transparent BTG55 crystallized glass which had been heat treated at 720 degrees C for 3 h. The orientation degree along the polar c axis in the fresnoite phase increased with increasing removal thickness by polishing from the surface up to several microns. A d coefficient in transparent BTG55 crystallized glass of 24 +/- 3 pm/V has been obtained, which is the largest value in crystallized glass ever reported.