Two‐Dimensional Mapping of Er3+ Photoluminescence in CaF2 Crystal Lines Patterned by Lasers in Oxyfluoride Glass
Two‐Dimensional Mapping of Er3+ Photoluminescence in CaF2 Crystal Lines Patterned by Lasers in Oxyfluoride Glass
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氟氧化物玻璃中激光图案化的 CaF2 晶体线中 Er3+ 光致发光的二维映射
DOI：
10.1111/j.1551-2916.2009.03010.x
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发表时间：
2009
影响因子：
3.9
通讯作者：
T. Komatsu
中科院分区：
文献类型：
--
作者：
Masaki Kanno;T. Honma;T. Komatsu
采用激光诱导析晶法对41.5SiO2–21.3Al2O3–4.8CaO–12.6NaF–16.4CaF2–2.9NiO–0.5ErF3(摩尔分数)的氟氧化物玻璃进行了晶化处理，在玻璃表面形成了由直径为∼20 nm的CaF_2纳米晶组成的线条。从Er3+离子的显微光致发光(PL)谱发现，Er3+离子被掺入到激光(波长为1080 nm的连续波Yb：YVO4光纤激光器)照射下形成的CaF2纳米晶中。测量了Er~(3+)离子的4s3/2→4I15/2跃迁谱线表面和截面的二维光致发光强度图。结果表明，在激光照射区形成了两个发光强度不同的相，这表明激光照射区的中心部分由掺Er3+的CaF2纳米晶组成，中心部分的周围给出了Er3+离子丰富的配位状态。Er~(3+)掺杂CaF_2纳米晶的形成机理与激光辐照区域的温度分布有关。
The laser-induced crystallization method is applied to an oxyfluoride glass with the composition of 41.5SiO2–21.3Al2O3–4.8CaO–12.6NaF–16.4CaF2–2.9NiO–0.5ErF3 (mol%), and the lines consisting of CaF2 nanocrystals (diameter: ∼20 nm) are patterned on the glass surface. It is found from micro-photoluminescence (PL) spectra of Er3+ ions that Er3+ ions are incorporated into CaF2 nanocrystals formed by laser (continuous-wave Yb:YVO4 fiber laser with a wavelength of 1080 nm) irradiations. Two-dimensional mappings of the PL intensity for the 4S3/2→4I15/2 transition of Er3+ ions are measured for the surface and cross section of the patterned lines. It is found that two phases giving different PL intensities are formed in the laser-irradiated region, suggesting that the center part of the laser-irradiated region consists of Er3+-doped CaF2 nanocrystals and the surrounding of the center part gives the fluoride ion rich coordination state for Er3+ ions. The formation mechanism of Er3+-doped CaF2 nanocrystals is related to the temperature distribution of the laser-irradiated region.
影响因子：
3.9
作者：
Komatsu, T.;Ihara, R.;Fujiwara, T.
通讯作者：
Fujiwara, T.