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Optical spectroscopy of Ho3+ and Tm3+ in Ca3Sc2Ge3O12 crystals

Identifieur interne : 001B23 ( Main/Exploration ); précédent : 001B22; suivant : 001B24

Optical spectroscopy of Ho3+ and Tm3+ in Ca3Sc2Ge3O12 crystals

Auteurs : Enrico Cavalli [Italie] ; Alessandro Belletti [Italie] ; Stefano Bigotta [Italie] ; Alessandra Toncelli [Italie] ; Mauro Tonelli [Italie]

Source :

Journal of alloys and compounds [ 0925-8388 ] ; 2004.

RBID : Pascal:04-0236865

Descripteurs français

Pascal (Inist)
- Photoluminescence, Spectre absorption, Déclin luminescence, Etat excité, Effet Judd Ofelt, Rapport branchement, Durée vie radiative, Impureté, Emission spontanée, Addition holmium, Addition thulium, Monocristal, Grenats, Calcium Germanate, Scandium Germanate, Composé quaternaire, Etude expérimentale, Ca3Sc2Ge3O12:Ho Tm, Ca Ge O Sc, 7855H.

English descriptors

KwdEn :
- Absorption spectra, Branching ratio, Calcium Germanates, Excited states, Experimental study, Garnets, Holmium additions, Impurities, Judd Ofelt effect, Luminescence decay, Monocrystals, Photoluminescence, Quaternary compounds, Radiative lifetimes, Scandium Germanates, Spontaneous emission, Thulium additions.

Abstract

Single crystals of the Ca₃Sc₂Ge₃O₁₂ (CaSGG) garnet activated with Ho³⁺ and Tm³⁺ have been grown by the 'flux growth' technique. The absorption spectra, the visible emission properties and the decay curves of the excited states have been measured at 10 and 298 K. The room temperature absorption spectra have been analyzed in the framework of the Judd-Ofelt theory and the intensity parameters have been evaluated. The spontaneous transition probabilities, the branching ratios and the radiative lifetimes have been determined for the most important emitting states using the calculated intensity parameters, and the results have been compared with the experimental data in order to estimate the efficiency of the non-radiative processes.

Affiliations:

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Le document en format XML

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 and Tm<sup>3+</sup>
 in Ca<sub>3</sub>
Sc<sub>2</sub>
Ge<sub>3</sub>
O<sub>12</sub>
 crystals</title>
<author><name sortKey="Cavalli, Enrico" sort="Cavalli, Enrico" uniqKey="Cavalli E" first="Enrico" last="Cavalli">Enrico Cavalli</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>INFM and Dipartimento di Chimica Generale ed Inorganica, Chimica Analitica e Chimica Fisica, Università di Parma, Viale delle Scienze 17/a</s1>
<s2>43100 Parma</s2>
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<sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Optical spectroscopy of Ho<sup>3+</sup>
 and Tm<sup>3+</sup>
 in Ca<sub>3</sub>
Sc<sub>2</sub>
Ge<sub>3</sub>
O<sub>12</sub>
 crystals</title>
<author><name sortKey="Cavalli, Enrico" sort="Cavalli, Enrico" uniqKey="Cavalli E" first="Enrico" last="Cavalli">Enrico Cavalli</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>INFM and Dipartimento di Chimica Generale ed Inorganica, Chimica Analitica e Chimica Fisica, Università di Parma, Viale delle Scienze 17/a</s1>
<s2>43100 Parma</s2>
<s3>ITA</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
</inist:fA14>
<country>Italie</country>
<wicri:noRegion>43100 Parma</wicri:noRegion>
</affiliation>
</author>
<author><name sortKey="Belletti, Alessandro" sort="Belletti, Alessandro" uniqKey="Belletti A" first="Alessandro" last="Belletti">Alessandro Belletti</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>INFM and Dipartimento di Chimica Generale ed Inorganica, Chimica Analitica e Chimica Fisica, Università di Parma, Viale delle Scienze 17/a</s1>
<s2>43100 Parma</s2>
<s3>ITA</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
</inist:fA14>
<country>Italie</country>
<wicri:noRegion>43100 Parma</wicri:noRegion>
</affiliation>
</author>
<author><name sortKey="Bigotta, Stefano" sort="Bigotta, Stefano" uniqKey="Bigotta S" first="Stefano" last="Bigotta">Stefano Bigotta</name>
<affiliation wicri:level="1"><inist:fA14 i1="02"><s1>INFM-NEST and Dipartimento di Fisica, University di Pisa, Via Buonarroti 2</s1>
<s2>56127 Pisa</s2>
<s3>ITA</s3>
<sZ>3 aut.</sZ>
<sZ>4 aut.</sZ>
<sZ>5 aut.</sZ>
</inist:fA14>
<country>Italie</country>
<placeName><settlement type="city">Pise</settlement>
<region nuts="2">Toscane</region>
</placeName>
</affiliation>
</author>
<author><name sortKey="Toncelli, Alessandra" sort="Toncelli, Alessandra" uniqKey="Toncelli A" first="Alessandra" last="Toncelli">Alessandra Toncelli</name>
<affiliation wicri:level="1"><inist:fA14 i1="02"><s1>INFM-NEST and Dipartimento di Fisica, University di Pisa, Via Buonarroti 2</s1>
<s2>56127 Pisa</s2>
<s3>ITA</s3>
<sZ>3 aut.</sZ>
<sZ>4 aut.</sZ>
<sZ>5 aut.</sZ>
</inist:fA14>
<country>Italie</country>
<placeName><settlement type="city">Pise</settlement>
<region nuts="2">Toscane</region>
</placeName>
</affiliation>
</author>
<author><name sortKey="Tonelli, Mauro" sort="Tonelli, Mauro" uniqKey="Tonelli M" first="Mauro" last="Tonelli">Mauro Tonelli</name>
<affiliation wicri:level="1"><inist:fA14 i1="02"><s1>INFM-NEST and Dipartimento di Fisica, University di Pisa, Via Buonarroti 2</s1>
<s2>56127 Pisa</s2>
<s3>ITA</s3>
<sZ>3 aut.</sZ>
<sZ>4 aut.</sZ>
<sZ>5 aut.</sZ>
</inist:fA14>
<country>Italie</country>
<placeName><settlement type="city">Pise</settlement>
<region nuts="2">Toscane</region>
</placeName>
</affiliation>
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<series><title level="j" type="main">Journal of alloys and compounds</title>
<title level="j" type="abbreviated">J. alloys compd.</title>
<idno type="ISSN">0925-8388</idno>
<imprint><date when="2004">2004</date>
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<seriesStmt><title level="j" type="main">Journal of alloys and compounds</title>
<title level="j" type="abbreviated">J. alloys compd.</title>
<idno type="ISSN">0925-8388</idno>
</seriesStmt>
</fileDesc>
<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Absorption spectra</term>
<term>Branching ratio</term>
<term>Calcium Germanates</term>
<term>Excited states</term>
<term>Experimental study</term>
<term>Garnets</term>
<term>Holmium additions</term>
<term>Impurities</term>
<term>Judd Ofelt effect</term>
<term>Luminescence decay</term>
<term>Monocrystals</term>
<term>Photoluminescence</term>
<term>Quaternary compounds</term>
<term>Radiative lifetimes</term>
<term>Scandium Germanates</term>
<term>Spontaneous emission</term>
<term>Thulium additions</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr"><term>Photoluminescence</term>
<term>Spectre absorption</term>
<term>Déclin luminescence</term>
<term>Etat excité</term>
<term>Effet Judd Ofelt</term>
<term>Rapport branchement</term>
<term>Durée vie radiative</term>
<term>Impureté</term>
<term>Emission spontanée</term>
<term>Addition holmium</term>
<term>Addition thulium</term>
<term>Monocristal</term>
<term>Grenats</term>
<term>Calcium Germanate</term>
<term>Scandium Germanate</term>
<term>Composé quaternaire</term>
<term>Etude expérimentale</term>
<term>Ca3Sc2Ge3O12:Ho Tm</term>
<term>Ca Ge O Sc</term>
<term>7855H</term>
</keywords>
</textClass>
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</teiHeader>
<front><div type="abstract" xml:lang="en">Single crystals of the Ca<sub>3</sub>
Sc<sub>2</sub>
Ge<sub>3</sub>
O<sub>12</sub>
 (CaSGG) garnet activated with Ho<sup>3+</sup>
 and Tm<sup>3+</sup>
 have been grown by the 'flux growth' technique. The absorption spectra, the visible emission properties and the decay curves of the excited states have been measured at 10 and 298 K. The room temperature absorption spectra have been analyzed in the framework of the Judd-Ofelt theory and the intensity parameters have been evaluated. The spontaneous transition probabilities, the branching ratios and the radiative lifetimes have been determined for the most important emitting states using the calculated intensity parameters, and the results have been compared with the experimental data in order to estimate the efficiency of the non-radiative processes.</div>
</front>
</TEI>
<affiliations><list><country><li>Italie</li>
</country>
<region><li>Toscane</li>
</region>
<settlement><li>Pise</li>
</settlement>
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<tree><country name="Italie"><noRegion><name sortKey="Cavalli, Enrico" sort="Cavalli, Enrico" uniqKey="Cavalli E" first="Enrico" last="Cavalli">Enrico Cavalli</name>
</noRegion>
<name sortKey="Belletti, Alessandro" sort="Belletti, Alessandro" uniqKey="Belletti A" first="Alessandro" last="Belletti">Alessandro Belletti</name>
<name sortKey="Bigotta, Stefano" sort="Bigotta, Stefano" uniqKey="Bigotta S" first="Stefano" last="Bigotta">Stefano Bigotta</name>
<name sortKey="Toncelli, Alessandra" sort="Toncelli, Alessandra" uniqKey="Toncelli A" first="Alessandra" last="Toncelli">Alessandra Toncelli</name>
<name sortKey="Tonelli, Mauro" sort="Tonelli, Mauro" uniqKey="Tonelli M" first="Mauro" last="Tonelli">Mauro Tonelli</name>
</country>
</tree>
</affiliations>
</record>

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Optical spectroscopy of Ho3+ and Tm3+ in Ca3Sc2Ge3O12 crystals

Optical spectroscopy of Ho3+ and Tm3+ in Ca3Sc2Ge3O12 crystals

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri