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REPKOVÁ, M. FRUMAR, M. NĚMEC, P.
Originální název
Spectroscopic properties of Pr3+ ions in Ge-In-S chalcogenide glasses
Typ
audiovizuální tvorba
Jazyk
angličtina
Originální abstrakt
Homogeneous and stable glasses from (80GeS220In2S3)100-x(Pr2S3)x system, where x=0-7, were prepared using conventional method (direct synthesis from elements in evacuated silica ampoules). In the transmission spectra of studied glasses, narrow absorption bands, which were assigned to the intra-f electron transitions from the ground to higher energy levels of Pr3+ ions, are identified. The experimental values of oscillator strengths of individual electron transitions were calculated from the transmission spectra. The Judd-Ofelt parameters ( 2, 4, 6) of Pr3+ ions in studied glasses were determined from the values of oscillator strengths. Absolute minimization as well as relative minimization fitting procedures using five or six transitions were applied for the determination of Judd-Ofelt parameters. Obtained values of Judd-Ofelt parameters are discussed in relation with different concentration of Pr3+ ions in studied glasses and with the type of calculation. The values of probabilities of radiative spontaneous electron transitions between Pr3+ energy levels and other important quantities characterizing Pr3+ ions were determined using Judd-Ofelt parameters. The photoluminescence spectra of studied glasses were measured. From the results of Judd-Ofelt analysis, the individual bands of emission spectra were assigned to radiative spontaneous electron transitions between discrete energy states of Pr3+ ions.
Klíčová slova
rare ions, Judd-Ofelt theory, chalcogenide glasses, Raman and Infrared spectroscopy, thermal properties
Autoři
REPKOVÁ, M.; FRUMAR, M.; NĚMEC, P.
Vydáno
20. 6. 2005
Místo
Rumunsko, Sinaia
Strany od
6
Strany do
Strany počet
1
BibTex
@misc{BUT63389, author="Martina {Repková} and Miloslav {Frumar} and Petr {Němec}", title="Spectroscopic properties of Pr3+ ions in Ge-In-S chalcogenide glasses", booktitle="2nd International Workshop on Amorphous and Nanostructured Chalcogenides-Fundamentals and Applications, Abstract Book", year="2005", series="7", edition="5", pages="6--6", address="Rumunsko, Sinaia", note="presentation" }