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Femtosecond laser writing of Er~(3+)-doped CaF_(2) crystalline patterns in glass

机译:飞秒激光写入玻璃中掺Er〜(3+)的CaF_(2)晶体图案

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摘要

We report on the use of 800 nm, 250 kHz femtosecond laser pulses to precipitate Er~(3+)-doped CaF_(2) crystals inside oxyfluoride glass, which was confirmed with x-ray diffraction analysis. Confocal upconversion luminescence spectra show that the precipitated crystals have greatly enhanced upconversion luminescence intensity in comparison with unmodified glass. We demonstrate the possibility of three-dimensional optical data storage in the glass by the use of the confocal upconversion luminescence imaging.
机译:我们报道了使用800 nm,250 kHz飞秒激光脉冲在氟氧化物玻璃内沉淀Er〜(3+)掺杂的CaF_(2)晶体,这已通过X射线衍射分析得到了证实。共焦上转换发光光谱表明,与未改性的玻璃相比,沉淀的晶体具有大大增强的上转换发光强度。我们证明了通过使用共焦上转换发光成像在玻璃中进行三维光学数据存储的可能性。

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