Cascade-Avalanche Up-Conversion in Tm3+:YLF Crystals
Identifieur interne : 000E32 ( Pascal/Corpus ); précédent : 000E31; suivant : 000E33Cascade-Avalanche Up-Conversion in Tm3+:YLF Crystals
Auteurs : E. Yu. Perlin ; A. M. Tkachuk ; M.-F. Joubert ; R. MoncorgeSource :
- Optics and spectroscopy [ 0030-400X ] ; 2001-05.
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- Pascal (Inist)
English descriptors
- KwdEn :
Abstract
New efficient mechanisms of long-wavelength excitation of short-wavelength luminescence in a system of rare-earth impurity ions are proposed. The model studied involves a multilevel system of electronic states of a rare-earth ion interacting with the long-wavelength emission that is in resonance with one or several transitions between the excited levels. The concentration of impurity ions is assumed to be sufficiently high, so that the interionic cross-relaxation and the up-conversion play a significant role. Moreover, the model includes processes similar to photon avalanche, in which the photoinduced excitation of a single ion is converted into lower-level excitations of several ions, each of them reentering the process after photon absorption. Numerical solutions of the system of balance equations for a multilevel system are obtained with calculated and semiempirical parameters of self-quenching and up-conversion. It is shown that, in a system of Tm3+ impurity ions, short-wavelength luminescence at λ ≥ 0.29 μm can be efficiently excited by radiation at λ ≅ 1.11 or 0.649 μm with a moderate intensity. © 2001 MAIK Nauka / Interperiodica .
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NO : | PASCAL 01-0219151 AIP |
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ET : | Cascade-Avalanche Up-Conversion in Tm3+:YLF Crystals |
AU : | PERLIN (E. Yu.); TKACHUK (A. M.); JOUBERT (M.-F.); MONCORGE (R.) |
AF : | Vavilov State Optical Institute, All-Russia Research Center, St. Petersburg, 199034 Russia (1 aut., 2 aut.); LPCML, UMR 5620 du CNRS Universite Lyon 1, 69622 Villeurbanne Cedex, France (3 aut., 4 aut.); CIRIL, UMR 6637 CNRS-CEA-ISMRA, Universite de Caen, Laboratoire de Spectroscopie Atomique, 6 bd du Marechal Juin, 14050 Caen, France (4 aut.) |
DT : | Publication en série; Niveau analytique |
SO : | Optics and spectroscopy; ISSN 0030-400X; Coden OPSUA3; Etats-Unis; Da. 2001-05; Vol. 90; No. 5; Pp. 691-700 |
LA : | Anglais |
EA : | New efficient mechanisms of long-wavelength excitation of short-wavelength luminescence in a system of rare-earth impurity ions are proposed. The model studied involves a multilevel system of electronic states of a rare-earth ion interacting with the long-wavelength emission that is in resonance with one or several transitions between the excited levels. The concentration of impurity ions is assumed to be sufficiently high, so that the interionic cross-relaxation and the up-conversion play a significant role. Moreover, the model includes processes similar to photon avalanche, in which the photoinduced excitation of a single ion is converted into lower-level excitations of several ions, each of them reentering the process after photon absorption. Numerical solutions of the system of balance equations for a multilevel system are obtained with calculated and semiempirical parameters of self-quenching and up-conversion. It is shown that, in a system of Tm3+ impurity ions, short-wavelength luminescence at λ ≥ 0.29 μm can be efficiently excited by radiation at λ ≅ 1.11 or 0.649 μm with a moderate intensity. © 2001 MAIK Nauka / Interperiodica . |
CC : | 001B70H30H; 001B70H55H |
FD : | 7830H; 7855H; Etude expérimentale; Luminescence; Photoluminescence; Thulium; Spectre IR; Photoexcitation; Impureté; Yttrium composé; Lanthane composé; Fluor composé |
ED : | Experimental study; Luminescence; Photoluminescence; Thulium; Infrared spectra; Photoexcitation; Impurities; Yttrium compounds; Lanthanum compounds; Fluorine compounds |
LO : | INIST-10494 |
ID : | 01-0219151 |
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Pascal:01-0219151Le document en format XML
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<front><div type="abstract" xml:lang="en">New efficient mechanisms of long-wavelength excitation of short-wavelength luminescence in a system of rare-earth impurity ions are proposed. The model studied involves a multilevel system of electronic states of a rare-earth ion interacting with the long-wavelength emission that is in resonance with one or several transitions between the excited levels. The concentration of impurity ions is assumed to be sufficiently high, so that the interionic cross-relaxation and the up-conversion play a significant role. Moreover, the model includes processes similar to photon avalanche, in which the photoinduced excitation of a single ion is converted into lower-level excitations of several ions, each of them reentering the process after photon absorption. Numerical solutions of the system of balance equations for a multilevel system are obtained with calculated and semiempirical parameters of self-quenching and up-conversion. It is shown that, in a system of Tm<sup>3+</sup>
impurity ions, short-wavelength luminescence at λ ≥ 0.29 μm can be efficiently excited by radiation at λ ≅ 1.11 or 0.649 μm with a moderate intensity. © 2001 MAIK Nauka / Interperiodica .</div>
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<ET>Cascade-Avalanche Up-Conversion in Tm<sup>3+</sup>
:YLF Crystals</ET>
<AU>PERLIN (E. Yu.); TKACHUK (A. M.); JOUBERT (M.-F.); MONCORGE (R.)</AU>
<AF>Vavilov State Optical Institute, All-Russia Research Center, St. Petersburg, 199034 Russia (1 aut., 2 aut.); LPCML, UMR 5620 du CNRS Universite Lyon 1, 69622 Villeurbanne Cedex, France (3 aut., 4 aut.); CIRIL, UMR 6637 CNRS-CEA-ISMRA, Universite de Caen, Laboratoire de Spectroscopie Atomique, 6 bd du Marechal Juin, 14050 Caen, France (4 aut.)</AF>
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<LA>Anglais</LA>
<EA>New efficient mechanisms of long-wavelength excitation of short-wavelength luminescence in a system of rare-earth impurity ions are proposed. The model studied involves a multilevel system of electronic states of a rare-earth ion interacting with the long-wavelength emission that is in resonance with one or several transitions between the excited levels. The concentration of impurity ions is assumed to be sufficiently high, so that the interionic cross-relaxation and the up-conversion play a significant role. Moreover, the model includes processes similar to photon avalanche, in which the photoinduced excitation of a single ion is converted into lower-level excitations of several ions, each of them reentering the process after photon absorption. Numerical solutions of the system of balance equations for a multilevel system are obtained with calculated and semiempirical parameters of self-quenching and up-conversion. It is shown that, in a system of Tm<sup>3+</sup>
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