Near-IR emission in Pr3+single doped and tunable near-IR emission in Pr3+/Yb3+ codoped tellurite tungstate glasses for broadband optical amplifiers
| Autor: | Jorge D. Marconi, Marcos Paulo Belançon, Luiz C. Barbosa, Mariana F. Ando |
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| Rok vydání: | 2014 |
| Předmět: |
Optical amplifier
Materials science business.industry Organic Chemistry Doping Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Inorganic Chemistry chemistry.chemical_compound Full width at half maximum Emission band Wavelength Optics Tungstate chemistry Broadband Optoelectronics Emission spectrum Electrical and Electronic Engineering Physical and Theoretical Chemistry business Spectroscopy |
| Zdroj: | Optical Materials. 36:1020-1026 |
| ISSN: | 0925-3467 |
| DOI: | 10.1016/j.optmat.2014.01.014 |
| Popis: | A study of the broadband near-infrared emission in Pr3+ single doped and Pr3+/Yb3+ codoped tellurite–tungstate glasses for optical amplification is presented. In the Pr3+ single doped samples pumped at 474 nm the emission band at 1480 nm presents a FWHM of ∼140 nm. The Yb3+ addition produces a FWHM broadening up to ∼155 nm, achieved through the 1G4–3H5 transition. The emission spectra when the codoped sample is pumped at 980 nm shows efficient energy transfer from Yb3+ to Pr3+, resulting in an intense Pr3+ emission around 1330 nm. This shows that changing the pump wavelength it is possible to select the 1D2–1G4 or the 1G4–3H5 transition, displacing the emission band from ∼1480 to ∼1330 nm. |
| Databáze: | OpenAIRE |
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