摘要
We report on the bluish green upconversion luminescence of niobium ions doped silicate glass by a femtosecond laser irradiation. The dependence of the fluorescence intensity on the pump power density of laser indicates that the conversion of infrared irradiation to visible emission is dominated by three-photon excitation process. We suggest that the charge transfer from O2-to Nb5+can efficiently contribute to the bluish green emission. The results indicate that transition metal ions without d electrons play an important role in fields of optics when embedded into silicate glass matrix.
| 源语言 | 英语 |
|---|---|
| 页(从-至) | 6502-6506 |
| 页数 | 5 |
| 期刊 | Optics Express |
| 卷 | 16 |
| 期 | 9 |
| DOI | |
| 出版状态 | 已出版 - 28 4月 2008 |
| 已对外发布 | 是 |
学术指纹
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