在有源发光玻璃的制备过程中,通常需要掺杂微量元素,用于改善玻璃的发光性能,因此在生产过程中进行快速检测非常重要。本实验针对激光诱导击穿光谱技术(LIBS)分析玻璃中微量元素灵敏度不足的问题,利用激光诱导荧光辅助激光诱导击穿光谱技术(LIBS-LIF)检测了玻璃中3种微量元素Yb, Al和P。使用波长可调谐激光激发等离子体中的Yb+离子、Al原子和P原子,并对这3种粒子在激光诱导荧光中的跃迁过程进行了分析。结果表明,通过激光诱导荧光辅助激光诱导击穿光谱技术,Yb+离子、Al原子和P原子的光谱强度分别增强了23, 50和8倍,大幅度提高了LIBS分析的灵敏度。
In the preparation of active luminescent glass, trace elements are generally co-doped to improve the properties. To overcome the poor sensitivity of laser-induced breakdown spectroscopy (LIBS) on detecting trace elements in glass, this work utilized laser-induced breakdown spectroscopy combined with laser-induced fluorescence to detect trace Yb, Al and P. A wavelength-tunable laser was used to excited Yb ions, Al atoms and P atoms. The transition process in laser-induced fluorescence was described. The results showed that the spectral intensities of Yb, Al and P were enhanced by 23, 50 and 8 times, respectively. LIBS sensitivity was greatly improved by combining laser-induced fluorescence.
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