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Titel: Time-resolved Z-scan and thermal lens measurements in Er+3 and Nd+3 doped fluoroindate glasses
Verfasser: Catunda, T.
Baesso, M.L.
Messaddeq, Younes
Aegerter, Michel A.
Sprache: Englisch
Erscheinungsjahr: 1997
Quelle: Journal of non-crystalline solids. - 213/214. - 1997, S. 225-230
SWD-Schlagwörter: Polarisation
Optisches Pumpen
Fluoride
Strontium
Barium
Lanthanoide
Brechzahl
DDC-Sachgruppe: 500 Naturwissenschaften
Dokumentart : Journalartikel
Kurzfassung: In rare earth ion doped solids, a resonant non-linear refractive index, n2, appears when the laser pumps one of the ion excited states and the refractive index change is proportional to the excited state population. In these solids there are usually thermal and non-thermal lensing effects, where the non-thermal one is due to the polarizability difference, between excited and ground states of the ions. We have used the time resolved Z-scan and a mode-mismatched thermal lens technique with an Ar+ ion laser in Er+3 (20ZnF2-20SrF2-2NaF-16BaF2-6GaF3-(36-x)InF3-xErF3, with x=1, 2, 3 and 4 mol%) and Nd+3 (20SrF2-16BaF2-20ZnF2-2GdF3-2NaF-(40-x)InF3-xNdF3, with x=0.1, 0.25, 0.5-1 mol%) doped fluoroindate glasses. In both samples we found that the non-linear refraction is due to the thermal effect, while the non-thermal effect is negligible. This result indicates that in fluoride glasses &Dgr;&agr; is very small (less than 10-26 cm3). We also measured the imaginary part of the non-linear refractive index due to absorption saturation.
Link zu diesem Datensatz: urn:nbn:de:bsz:291-scidok-24463
hdl:20.500.11880/24270
http://dx.doi.org/10.22028/D291-24214
SciDok-Publikation: 16-Nov-2009
Fakultät: Sonstige Einrichtungen
Fachrichtung: SE - INM Leibniz-Institut für Neue Materialien
Fakultät / Institution:INM
SE - Sonstige Einrichtungen

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