相关实验视频
Updated: May 13, 2026
07:51
Fabrication of Silica Ultra High Quality Factor Microresonators
Published on: July 2, 2012
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概括
研究人员使用Si缺陷激活了酸盐中的木活性中心,在1408 nm时实现了高效的E波段激发. 这导致了改善的双化纤维 (BDSF) 光和光学放大器的28.8dB增益.
科学领域:
- 材料科学 材料科学 材料科学
- 光学工程是指光学工程.
- 量子化学 是一个量子化学.
背景情况:
- 激活在中的活跃中心对于开发先进光学材料至关重要.
- 了解缺陷结构是提高合纤维光学性能的关键.
- 目前用于制造合石英纤维 (BDSF) 的现有方法需要优化,以改善光.
研究的目的:
- 通过引入Si缺陷结构来研究和结构活性中心的激活.
- 从理论上模拟和实验验证E波段活性中心的激发.
- 制造和表征具有增强光特性的双化纤维 (BDSF).
主要方法:
- 使用时间依赖密度函数理论 (TD-DFT) 进行理论模拟,以建模Bi和Si ODC (I) 结构.
- 使用原子层沉积 (ALD) 和改性化学蒸气沉积 (MCVD) 制造双化纤维 (BDSF).
- 使用UV-VIS光谱学,X射线光电子光谱学 (XPS),拉曼光谱学和光谱学进行表征.
主要成果:
- TD-DFT模拟预测了Bi和Si ODC (I) 模型在1408 nm的E波段激发.
- 制造的BDSF表现出UV-VIS光谱峰值为424厘米−1,XPS结合能为439.3 eV (Bi°原子),而拉曼峰值为811厘米−1 (Bi-O键).
- 在1420nm观察到的实验性发射峰值,基于BDSF的光学放大器获得了28.8dB的收益,证实了有效的E频段木活跃中心刺激.
结论:
- 引入Si缺陷结构有效地激活了二氧化中的比斯活性中心.
- 制造的BDSF表现出显著的光改善和有效的E频段刺激.
- 该研究验证了理论预测,并证实了BDSF在光学放大应用中的潜力.
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