Thermal and optical properties of TeO2-BaO-SrO-Nb2O5 based glasses:: New broadband Raman gain media
Thermal and optical properties of TeO2-BaO-SrO-Nb2O5 based glasses:: New broadband Raman gain media
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DOI：
10.1016/j.jnoncrysol.2006.09.013
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发表时间：
2006-12-15
影响因子：
3.5
通讯作者：
Ohishi, Yasutake
中科院分区：
文献类型：
--
作者：
Jose, Rajan;Suzuki, Takenobu;Ohishi, Yasutake
在Teo（2）BaO-SrO-Nb_2O_5（TBSN）系统中系统地添加了10mol%的WO_3和16mol%的P_2O_5，研究了玻璃的热学和光学性质。给出了添加剂浓度对玻璃化转变温度（Tg）和晶化温度（T-x）的依赖关系。添加≥ 4mol%WO3和PA的TBSN玻璃显示出高的抗析晶稳定性。利用紫外-可见-近红外吸收光谱研究了由于WO 3和P2 O 5的加入而引起的光学带隙能量的变化。另外，WO 3使光学带隙向较长波长移动，而P2 O 5使光学带隙向较短波长移动。研究了WO_3和P_2O_5对TBSN玻璃拉曼光谱的影响。由于WO 4和PO 4四面体在玻璃中形成的新的拉曼带加宽了它们的拉曼光谱。玻璃具有热稳定性高、拉曼光谱宽等特点，是光子学系统中光纤拉曼放大器的理想材料。(c)2006 Elsevier B. V.保留所有权利。
We systematically added WO3 (UP to 10 mol%) and P2O5 (up to 16 mol%) in Teo(2) BaO-SrO-Nb2O5 (TBSN) glass system and studied thermal and optical properties of the resultant glasses. The dependences of the additive concentration on glass transition (T-g) and crystallization (T-x) temperatures are presented. The TBSN glass added with >= 4 mol% WO3 and PA showed high stability against crystallization. The changes in optical band gap energy due to WO3 and P2O5 addition was studied using UV-VIS-NIR absorption spectrometry. The WO3 addition shifted the optical band gap to longer wavelengths, whereas P2O5 addition shifted that to shorter wavelengths. Effects of the WO3 and P2O5 addition on the Raman spectra of' TBSN glass are clarified. New Raman bands due to WO4 and PO4 tetrahedra formed in the resultant glasses broadened their Raman spectra. Present glasses are characterized by higher thermal stability and wider Raman spectra, therefore, they are promising candidates for fiber Raman amplifiers in photonics systems. (c) 2006 Elsevier B.V. All rights reserved.