Spectroscopic and luminescence characteristics of erbium doped TNZL glass for lasing materials

Assadi, Achraf Amir; Damak, Kamel; Lachheb, R.; Herrmann, Andreas; Yousef, El Sayed; Rüssel, Christian; Elleuch, Riadh

doi:10.1016/j.jallcom.2014.09.120

Cited by 67 publications

(9 citation statements)

References 45 publications

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“…The great appeal of this theory is the ability to forecast the oscillator strengths in absorption and to give information about the luminescence branching ratios and lifetimes by using only three parameters, Ω k ( k = 2,4,6) [36-39]. …”

Section: Resultsmentioning

confidence: 99%

Synthesis of Gd2O3:Eu nanoplatelets for MRI and fluorescence imaging

et al. 2015

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We synthesized Gd2O3 and Gd2O3 doped by europium (Eu) (2% to 10%) nanoplatelets using the polyol chemical method. The synthesized nanoplatelets were characterized by X-ray diffraction (XRD), FESEM, TEM, and EDX techniques. The optical properties of the synthesized nanoplatelets were investigated by photoluminescence spectroscopy. We also studied the magnetic resonance imaging (MRI) contrast enhancement of T1 relaxivity using 3 T MRI. The XRD for Gd2O3 revealed a cubic crystalline structure. The XRD of Gd2O3:Eu3+ nanoplatelets were highly consistent with Gd2O3 indicating the total incorporation of the Eu3+ ions in the Gd2O3 matrix. The Eu doping of Gd2O3 produced red luminescence around 612 nm corresponding to the radiative transitions from the Eu-excited state 5D0 to the 7F2. The photoluminescence was maximal at 5% Eu doping concentration. The stimulated CIE chromaticity coordinates were also calculated. Judd-Ofelt analysis was used to obtain the radiative properties of the sample from the emission spectra. The MRI contrast enhancement due to Gd2O3 was compared to DOTAREM commercial contrast agent at similar concentration of gadolinium oxide and provided similar contrast enhancement. The incorporation of Eu, however, decreased the MRI contrast due to replacement of gadolinium by Eu.

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Section: Resultsmentioning

confidence: 99%

Synthesis of Gd2O3:Eu nanoplatelets for MRI and fluorescence imaging

et al. 2015

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“…Therefore, it is essential to develop ultra-broadband optical amplifiers that cover the entire low-loss wavelength region of silica glass fibers for more efficient wavelength division multiplexing (WDM) networks [3,4]. Following the success of rare-earth doped fiber amplifiers, an effort is now concentrated on developing integrated planar lightwave circuits comprising passive and active optical components, in order to meet the requirements of modern alloptical networks.…”

Section: Introductionmentioning

confidence: 99%

Praseodymium ion doped phosphate glasses for integrated broadband ion-exchanged waveguide amplifier

Shen

Chen

Lin

et al. 2015

Journal of Alloys and Compounds

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“…The Judd-Ofelt theory [34,35] is the most widely used and known theory in the analysis of spectroscopic properties of rare earth ions in different hosts. The great appeal of this theory is the ability to forecast the oscillator strengths in absorption and to give information about the luminescence branching ratios and lifetimes by using only three parameters, Ω k (k = 2,4,6) [36][37][38][39].…”

Section: Judd-ofelt and Radiative Analysismentioning

confidence: 99%

Synthesis of Gd2O3:Eu nanoplatelets for MRI and fluorescence imaging

Maalej¹,

Qurashi²,

Assadi³

et al. 2016

Nano Online

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We synthesized Gd 2 O 3 and Gd 2 O 3 doped by europium (Eu) (2% to 10%) nanoplatelets using the polyol chemical method. The synthesized nanoplatelets were characterized by X-ray diffraction (XRD), FESEM, TEM, and EDX techniques. The optical properties of the synthesized nanoplatelets were investigated by photoluminescence spectroscopy. We also studied the magnetic resonance imaging (MRI) contrast enhancement of T1 relaxivity using 3 T MRI. The XRD for Gd 2 O 3 revealed a cubic crystalline structure. The XRD of Gd 2 O 3 :Eu 3+ nanoplatelets were highly consistent with Gd 2 O 3 indicating the total incorporation of the Eu 3+ ions in the Gd 2 O 3 matrix. The Eu doping of Gd 2 O 3 produced red luminescence around 612 nm corresponding to the radiative transitions from the Eu-excited state 5 D 0 to the 7 F 2. The photoluminescence was maximal at 5% Eu doping concentration. The stimulated CIE chromaticity coordinates were also calculated. Judd-Ofelt analysis was used to obtain the radiative properties of the sample from the emission spectra. The MRI contrast enhancement due to Gd 2 O 3 was compared to DOTAREM commercial contrast agent at similar concentration of gadolinium oxide and provided similar contrast enhancement. The incorporation of Eu, however, decreased the MRI contrast due to replacement of gadolinium by Eu.

show abstract

Spectroscopic and luminescence characteristics of erbium doped TNZL glass for lasing materials

Cited by 67 publications

References 45 publications

Synthesis of Gd2O3:Eu nanoplatelets for MRI and fluorescence imaging

Synthesis of Gd2O3:Eu nanoplatelets for MRI and fluorescence imaging

Praseodymium ion doped phosphate glasses for integrated broadband ion-exchanged waveguide amplifier

Synthesis of Gd2O3:Eu nanoplatelets for MRI and fluorescence imaging

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