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Optical spectroscopy and local structure of the Nd3+ luminescence centres in glasses of the CaO–Ga2O3–GeO2 system
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Title: Optical spectroscopy and local structure of the Nd3+ luminescence centres in glasses of the CaO–Ga2O3–GeO2 system

Creator:

Padlyak, Bohdan ; Ryba-Romanowski, Witold ; Lisiecki, Radosław

Contributor:

Gaj, Miron. Redakcja ; Urbańczyk, Wacław. Redakcja

Description:

Optica Applicata, Vol. 38, 2008, nr 1, s. 189-202

Abstrakt:

Optical absorption and luminescence spectra as well as luminescence kinetics of the Nd3+ centres in glasses with Ca3Ga2Ge3O12:Nd composition, containing 0.2 and 1.0 wt% of the Nd2O3 were presented and analysed. The oscillator strengths and phenomenological intensity parameters Ωt (Ω2, Ω4, and Ω6) were obtained using standard Judd–Ofelt theory. Calculated Ωt parameters, radiative transitions rates, branching ratios and radiative lifetime for Nd3+ centres in the glass with Ca3Ga2Ge3O12 composition were analysed and compared with corresponding Nd3+ parameters in their crystalline analogue with garnet structure. Experimental lifetimes are compared with those calculated, and quantum efficiency of Nd3+ centres from 4F3/2 emitting level in the glass with Ca3Ga2Ge3O12 composition is estimated. Incorporation peculiarities and local structure of Nd3+ luminescence centres in the glass with Ca3Ga2Ge3O12 composition and corresponding Ca3Ga2Ge3O12:Nd3+ garnet laser crystals are considered. On the basis of extended X-ray absorption fine structure (EXAFS) spectra (L3-edge) of rare-earth elements analysis it has been shown that Nd3+ luminescence centres in the CaO–Ga2O3–GeO2 glass network occupy structural sites with the coordination number to oxygen N = 6.

Publisher:

Oficyna Wydawnicza Politechniki Wrocławskiej

Place of publication:

Wrocław

Date:

2008

Resource Type:

artykuł

Resource Identifier:

oai:dbc.wroc.pl:62848

Source:

<sygn. PWr A3481II> ; click here to follow the link ; click here to follow the link

Language:

eng

Relation:

Optica Applicata ; Optica Applicata, Vol. 38, 2008 ; Optica Applicata, Vol. 38, 2008, nr 1 ; Politechnika Wrocławska. Wydział Podstawowych Problemów Techniki

Rights:

Wszystkie prawa zastrzeżone (Copyright)

Access Rights:

Dla wszystkich w zakresie dozwolonego użytku

Location:

Politechnika Wrocławska

Group publication title:

Optica Applicata

Subject and keywords:

optyka germanate glasses Nd3+ centre optical absorption luminescence decay kinetics extended X-ray absorption fine structure (EXAFS) local structure

Object collections:

Last modified:

Mar 21, 2019

In our library since:

Mar 21, 2019

Number of object content hits:

161

All available object's versions:

https://dbc.wroc.pl/publication/113989

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Edition name Date
Optical spectroscopy and local structure of the Nd3+ luminescence centres in glasses of the CaO–Ga2O3–GeO2 system Mar 21, 2019

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