Upconversion and relaxation of high lying states in rare-earth-doped ZBLAN bulk and fibers
Identifieur interne : 003330 ( Istex/Curation ); précédent : 003329; suivant : 003331Upconversion and relaxation of high lying states in rare-earth-doped ZBLAN bulk and fibers
Auteurs : B. Jacquier [France] ; A. Remillieux [France] ; M. F. Joubert [France] ; P. Christensen [France] ; H. Poignant [France]Source :
- Journal of Non-Crystalline Solids [ 0022-3093 ] ; 1993.
English descriptors
- KwdEn :
- Blue fluorescence, Decay curve, Excitation, Excitation spectra, Excitation spectrum, Fiber configuration, Infrared emission, Jacquier, Laser, Laser excitation, Long decay, Photon, Photon energy, Praseodymium, Rare earth distribution, Room temperature, State absorption, Time microseconds, Upconversion, Upconversion lasers, Ytterbium ions, Zblan bulk.
- Teeft :
- Blue fluorescence, Decay curve, Excitation, Excitation spectra, Excitation spectrum, Fiber configuration, Infrared emission, Jacquier, Laser, Laser excitation, Long decay, Photon, Photon energy, Praseodymium, Rare earth distribution, Room temperature, State absorption, Time microseconds, Upconversion, Upconversion lasers, Ytterbium ions, Zblan bulk.
Abstract
Abstract: Upconversion pumping of fluorescence of Nd3+-, Tm3+- and Pr3+-doped and Pr3+-Yb3+ co-doped samples of ZBLAN in bulk and fiber form was measured using cw and pulsed laser excitation. It is shown that single-laser-beam excited fluorescence is very sensitive to the resonance between the photon energy and an excited state transition frequency. Such resonance in the ESA mechanism can be associated with avalanche absorption in crystals and suggests the possibility of observing similar effects in these glasses, but it could be two-step absorption given the broad bands of glasses. It is concluded that the fiber configuration, as compared with bulk, is the best suited for achieving efficient upconversion lasers.
Url:
DOI: 10.1016/0022-3093(93)90708-6
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ISTEX:E8822072E5752A94EA3E7AA88C669CE83D422091Le document en format XML
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<term>State absorption</term>
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<front><div type="abstract" xml:lang="en">Abstract: Upconversion pumping of fluorescence of Nd3+-, Tm3+- and Pr3+-doped and Pr3+-Yb3+ co-doped samples of ZBLAN in bulk and fiber form was measured using cw and pulsed laser excitation. It is shown that single-laser-beam excited fluorescence is very sensitive to the resonance between the photon energy and an excited state transition frequency. Such resonance in the ESA mechanism can be associated with avalanche absorption in crystals and suggests the possibility of observing similar effects in these glasses, but it could be two-step absorption given the broad bands of glasses. It is concluded that the fiber configuration, as compared with bulk, is the best suited for achieving efficient upconversion lasers.</div>
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