Transparent nonlinear optical crystallized glass fibers with highly oriented Ba2TiGe2O8 crystals
Transparent nonlinear optical crystallized glass fibers with highly oriented Ba2TiGe2O8 crystals
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DOI：
10.1063/1.2890144
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发表时间：
2008-03
影响因子：
3.2
通讯作者：
Yosuke Hane;T. Komatsu;Y. Benino;T. Fujiwara
中科院分区：
文献类型：
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作者：
Yosuke Hane;T. Komatsu;Y. Benino;T. Fujiwara
用30 BaO-15 TiO_2 - 55 GeO_2玻璃熔体直接提拉法拉制出直径为100-200μm的玻璃纤维，并通过玻璃纤维的晶化制备出由Ba_2TiGe_2O_8晶体组成的透明晶化玻璃纤维。线偏振显微拉曼散射光谱表明，纤维表面结晶，Ba_2TiGe_2O_8晶体由表面向内生长，呈c轴取向。发现在完全结晶化的玻璃纤维的中心经常形成孔，并且通过仔细的热处理，例如，λ =200μm的纤维显示λ =40μm的中空（毛细管型孔）。通过在玻璃纤维制备中添加少量的Sb 2 O 3，开发出没有孔的透明结晶玻璃纤维，并且从这样的纤维中清楚地观察到二次谐波产生（SHG）。本研究提出，透明结晶玻璃纤维显示出强烈的SH…
Glass fibers with a diameter of 100–200μm are drawn by just pulling up melts of 30BaO–15TiO2–55GeO2 glass, and transparent crystallized glass fibers consisting of nonlinear optical Ba2TiGe2O8 crystals are fabricated by crystallization of glass fibers. It is clarified from linearly polarized micro-Raman scattering spectra that fibers show the surface crystallization and Ba2TiGe2O8 crystals grow from the surface to the interior, giving c-axis orientations. It is found that holes are formed frequently in the center of fully crystallized glass fibers, and transparent hollow crystallized glass fibers are fabricated through careful heat treatments, e.g., fibers with ϕ=200μm show hollows (capillary-type holes) with ϕ=40μm. By adding a small amount of Sb2O3 in glass fiber preparations, transparent crystallized glass fibers with no holes are developed and second harmonic generations (SHGs) are clearly observed from such fibers. The present study proposes that transparent crystallized glass fibers showing strong SH...