飞秒激光在不同羟基浓度纯石英玻璃内部诱导缺陷研究

发布时间：2018-04-21 07:29

  本文选题：激光制造 + 飞秒激光　； 参考：《中国激光》2017年01期

【摘要】：采用飞秒激光脉冲辐照不同羟基浓度的纯石英玻璃,诱导其内部产生缺陷。系统研究了羟基浓度、激光脉宽和激光功率对缺陷类型和浓度的影响。石英玻璃的显微荧光谱、吸收谱和发射谱测试表明,飞秒激光诱导石英玻璃可以产生非桥氧空穴中心(NBOHC)、非弛豫氧空位[ODC(Ⅱ)]和E′心3种缺陷;低羟基浓度石英玻璃易产生ODC(Ⅱ)缺陷,高羟基浓度石英玻璃易产生NBOHC缺陷。用波长为254nm的紫外灯激发飞秒激光辐照后的高羟基浓度石英玻璃可观察到明显的红色荧光(波长为650nm),其发光强度与飞秒激光的脉宽和功率相关,发光强度随激光脉宽的增加先增加后减小,随激光功率的增加先增加后趋于平缓。
[Abstract]:Pure quartz glass with different hydroxyl concentration was irradiated by femtosecond laser pulse to induce defects. The effects of hydroxyl concentration, laser pulse width and laser power on defect type and concentration were systematically studied. The photoluminescence spectra, absorption spectra and emission spectra of quartz glass show that the femtosecond laser induced quartz glass can produce three defects: NBOHCO, ODC (鈪，

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