Detail publikace

Spectroscopic properties of Pr3+ ions in Ge-In-S chalcogenide glasses

REPKOVÁ, M. NĚMEC, P. FRUMAR, M.

Originální název

Spectroscopic properties of Pr3+ ions in Ge-In-S chalcogenide glasses

Typ

článek v časopise - ostatní, Jost

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

optical properties, Judd-Ofelt theory, rare elements, chalcogenide glasses, thermal properties, Raman and Infrared spectroscopy

Autoři

REPKOVÁ, M.; NĚMEC, P.; FRUMAR, M.

Rok RIV

2005

Vydáno

20. 10. 2005

Místo

Rumunsko

ISSN

1454-4164

Periodikum

Journal of Optoelectronics and Advanced Materials

Ročník

7

Číslo

5

Stát

Rumunsko

Strany od

2247

Strany do

2253

Strany počet

7

BibTex

@article{BUT46340,
  author="Martina {Repková} and Petr {Němec} and Miloslav {Frumar}",
  title="Spectroscopic properties of Pr3+ ions in Ge-In-S chalcogenide glasses",
  journal="Journal of Optoelectronics and Advanced Materials",
  year="2005",
  volume="7",
  number="5",
  pages="2247--2253",
  issn="1454-4164"
}