Cooperative up-conversion luminescence of ytterbium doped yttrium lanthanum oxide transparent ceramic

Dou, Chuanguo; Yang, Qiuhong; Hu, Xiaoman; Xu, Jing

doi:10.1016/j.optcom.2007.10.037

Cited by 28 publications

(11 citation statements)

References 14 publications

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“…The effective ionic radius of Y 3+ ion and Li + ion are 90.0 and 76.0 pm, respectively [16,17], hence, substituting the Y 3+ ion with the smaller Li + ion can induce the shrinking of the host lattice, whereas Li + ions occupying interstitial sites leads to the expansion of the host lattice. Consequently, when the concentration of Li + ions is below 7 mol%, Li + ions occupy substitutional sites, but with higher concentrations, Li + ions begin to take interstitial sites.…”

Section: Resultsmentioning

confidence: 99%

Enhancement of upconversion emission in Y3Al5O12:Er3+ induced by Li+ doping at interstitial sites

Yang

Sui

Wang

et al. 2010

Chemical Physics Letters

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Section: Resultsmentioning

confidence: 99%

Enhancement of upconversion emission in Y3Al5O12:Er3+ induced by Li+ doping at interstitial sites

Yang

Sui

Wang

et al. 2010

Chemical Physics Letters

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“…The emission from the 4f 1 5d 1 configuration of Pr 3+ has also been investigated by upconversion (Fig. 12) dimer system (this luminescence has been employed as a signature of ytterbium ion clustering in glasses [141]), which also produces emission bands near 500 nm [142]. Also, the presence of trace impurities of Er 3+ leads to green and red emissions from dominant Yb 3+ -Er 3+ upconversion.…”

Section: Photon Avalanchementioning

confidence: 99%

Lanthanide Luminescence in Solids

Tanner

2010

Springer Series on Fluorescence

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A tutorial introduction to the spectra of lanthanide ions is given. The chapter begins with a brief comparison of luminescence of lanthanide ions (Ln 3+ ) in the solid, liquid, and gas phases. Then a description of the importance of nonradiative versus radiative processes is made. The various types of transition of lanthanide ions encountered are then introduced: 4f N -4f N ; 4f N -4f NÀ1 5d; charge transfer; host band-to-band; and defect site or impurity transitions. Reference is briefly made to the spectra of dipositive ions. The luminescence of lanthanide ions in non-lanthanide hosts is examined, and the importance of locating the relative positions of Ln 3+ energy levels relative to the host band gap is stressed. Some of the various upconversion phenomena, including second harmonic generation, twophoton absorption, ground state/excited state absorption, energy transfer upconversion, and photon avalanche, are then described with reference to Ln 3+ and Ln 3+ -TM n+ (transition metal) systems. The experimental distinctions of which particular process is operative in a given system are explained by considering the power, concentration, and lifetime dependences, and the upconversion excitation spectrum. Some applications of lanthanide luminescence are briefly reviewed and a mention of the luminescence in nanomaterials is also included.

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“…1͒ and Yb: Gd 2 SiO 5 , 2,3 Yb-doped fibers, 4 Yb-doped glass, 5 and Ybdoped ceramics, [6][7][8] with performance superiority over their Nd-doped counterparts in avoiding detrimental upconversion, cross-relaxation, and concentration quenching. Polycrystalline ceramics are particularly competitive hosts that allow for large damage thresholds, and high Yb-doping concentrations with excellent thermal properties.…”

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confidence: 99%

Low-threshold and broadly tunable lasers of Yb3+-doped yttrium lanthanum oxide ceramic

Hao

Zeng

et al. 2008

Applied Physics Letters

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We experimentally demonstrated diode-pumped continuous wave and tunable laser operation of Yb3+-doped yttrium lanthanum oxide transparent ceramic [Yb:(Y1−xLax)2O3,x=0.1], which was fabricated with nanopowders and sintered in H2 atmosphere. As low as 400mW pumping threshold and a slope efficiency of 52% were realized at 1080nm under a high-brightness 976nm diode pump with a fiber core of 50μm and a numerical aperture of 0.22. A maximum output power of 2.1W was obtained when the non-lasing absorbed pump power was 19.5W at 976nm with diode laser of 400μm fiber core. A smooth tunable curve from 1018to1086nm was achieved at 940nm diode pump. Broadband lasing spectra up to 30nm were observed in the tunable laser experiment.

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Cooperative up-conversion luminescence of ytterbium doped yttrium lanthanum oxide transparent ceramic

Cited by 28 publications

References 14 publications

Enhancement of upconversion emission in Y3Al5O12:Er3+ induced by Li+ doping at interstitial sites

Enhancement of upconversion emission in Y3Al5O12:Er3+ induced by Li+ doping at interstitial sites

Lanthanide Luminescence in Solids

Low-threshold and broadly tunable lasers of Yb3+-doped yttrium lanthanum oxide ceramic

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