Er3+,Er3+-Yb3+and Er3+-Na+co-doped CaF2transparent ceramics were prepared by a hot-pressing method using Ca(NO3)2,Er(NO3)3, Yb(NO3)3, KF and NaF as raw materials. The absorption and emission spectra were measured. The spectroscopic properties were analysed with the experimental absorption data by the standard Judd–Ofelt theory to evaluate the intensity parameters t(t = 2, 4,6). The introduction of Yb3+or Na+for CaF2:Er3+transparent ceramic changes the Judd–Ofelt parameters t. From the Judd–Ofelt intensity p...
【基金】
国家自然科学基金(51072144);
武汉市科技攻关项目(2012-10231092)资助
【更新日期】
2013-12-30
【分类号】
O482.3
【正文快照】
1 IntroductionIn the past decades,considerable work were carriedout on fluoride materials,which have optical potentialapplications such as in solid-state laser and optoelectron-ic devices.[1–2]Compared to oxide or sulfide materials,fluoride materials exh
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