Abstract
Tm3+/Yb3+-doped alkali-barium-bismuth-tellurite (LKBBT) glasses have been fabricated and characterized. Density, refractive index, optical absorption, absorption and emission cross-sections of Yb3+, Judd-Ofelt parameters and spontaneous transition probabilities of Tm3+ have been measured and calculated, respectively. Intense blue three-photon upconversion fluorescence and near-infrared two-photon upconversion fluorescence were investigated under the excitation of a 980 nm diode laser at room temperature. Wide infrared transmission window, high refractive index and strong blue three-photon upconversion emission of Tm3+ indicate that Tm3+/Yb3+ co-doped LKBBT glasses are promising upconversion optical and laser materials.
| Original language | English |
|---|---|
| Pages (from-to) | 702-707 |
| Number of pages | 6 |
| Journal | Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy |
| Volume | 65 |
| Issue number | 3-4 |
| DOIs | |
| State | Published - Nov 2006 |
| Externally published | Yes |
Keywords
- Alkali-barium-bismuth-tellurite glasses
- Optical parameters
- Rare-earth ions
- Upconversion
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