Optical properties of rare earth-doped ZBLAN glasses

Wetenkamp, L.; West, G.F.; Többen, Helmut

doi:10.1016/s0022-3093(05)80737-9

Cited by 189 publications

(96 citation statements)

References 9 publications

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“…(1a)- (1f) can be found in the literature, for example [11,12,13]. These include the energy level lifetimes τ i , branching ratios β i j and numerous rates for ET processes W i j .…”

Section: Quantification Of the New Cross Relaxation Processmentioning

confidence: 99%

New energy-transfer upconversion process in Er^3+:ZBLAN mid-infrared fiber lasers

2016

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New energy-transfer upconversion process in Er³⁺:ZBLAN mid-infrared fiber lasers Optics Express, 2016; 24(7):6869-6883 © 2016 Optical Society of America. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modifications of the content of this paper are prohibited. Abstract:We report a new energy-transfer process in erbium doped ZBLAN glass, which is critical for optimizing the operation of lasers that use the 3.5 µm band 4 F 9/2 to 4 I 9/2 transition. The magnitude of this energytransfer process is measured for two different doping levels in Er 3+ :ZBLAN and the requirement for low doping in these lasers established.

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“…(1a)- (1f) can be found in the literature, for example [11,12,13]. These include the energy level lifetimes τ i , branching ratios β i j and numerous rates for ET processes W i j .…”

Section: Quantification Of the New Cross Relaxation Processmentioning

confidence: 99%

New energy-transfer upconversion process in Er^3+:ZBLAN mid-infrared fiber lasers

2016

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“…higher information transmission capacity and to improve the performance of the WDM network, a medium with a wide and flat gain at 1.5 m, which is related to the width of the 4 I 13/2 → 4 I 15/2 emission band, is required for the EDFA [19]. The some other reported values of FWHM at 1.5 m were 44 nm, 65 nm, 85 nm and 82 nm for Al/P silica [20], fluozirconate [21,22], tellurite [23], and ZBLAN [24], respectively. At present, the silica based and ZBLAN glasses are widely used as the media of the EDFA.…”

Section: Experimental Studiesmentioning

confidence: 99%

NIR luminescence from Er–Yb, Bi–Yb and Bi–Nd codoped germanate glasses for optical amplification

Lakshminarayana

Ruan

Qiu

2009

Journal of Alloys and Compounds

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“…Considering that only a dipole-dipole interaction is important, we have that the microscopic transfer rate is given by W DA ϭ(1/ D )(R DA /R) 6 . In this case, the transfer rate W DA (R) is equal to the intrinsic decay rate 1/ D of the donor state when RϭR DA .…”

Section: ͑12͒mentioning

confidence: 99%

“…5 Particularly, fluorozirconate glasses as ZBLAN (ZrF 4 -BaF 2 -LaF 3 -AlF 3 -NaF) have unique optical properties in the infrared region 6 and wide spectral range of optical transparency. These favorable physical properties make them excellent material for optical systems design 7 when doped with triply ionized rare earth ions.…”

Section: Introductionmentioning

confidence: 99%

Mechanism of the Yb–Er energy transfer in fluorozirconate glass

Vila¹,

Gomes²,

Tarelho³

et al. 2003

Journal of Applied Physics

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The mechanism of the Yb 3ϩ →Er 3ϩ energy transfer as a function of the donor and the acceptor concentration was investigated in Yb 3ϩ -Er 3ϩ codoped fluorozirconate glass. The luminescence decay curves were measured and analyzed by monitoring the Er 3ϩ ( 4 I 11/2 ) fluorescence induced by the Yb 3ϩ ( 2 F 5/2 ) excitation. The energy transfer microparameters were determined and used to estimate the Yb-Er transfer rate of an energy transfer process assisted by excitation migration among donors state ͑diffusion model͒. The experimental transfer rates were determined from the best fitting of the acceptor luminescence decay obtained using a theoretical approach analog to that one used in the Inokuti-Hirayama model for the donor luminescence decay. The obtained values of transfer parameter gamma ͓␥͑exp͔͒ were always higher than that predicted by the Inokuti-Hirayama model. Also, the experimental transfer rate, ␥ 2 (exp), was observed to be higher than the transfer rate predicted by the migration model. Assuming a random distribution among excited donors at the initial time (tϭ0) and that a fast excitation migration, which occurs in a very short time (t Ӷ␥ Ϫ2 ), reducing the mean distance between donor ͑excited͒ and acceptor, all the observed results could be explained.

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Optical properties of rare earth-doped ZBLAN glasses

Cited by 189 publications

References 9 publications

New energy-transfer upconversion process in Er^3+:ZBLAN mid-infrared fiber lasers

New energy-transfer upconversion process in Er^3+:ZBLAN mid-infrared fiber lasers

NIR luminescence from Er–Yb, Bi–Yb and Bi–Nd codoped germanate glasses for optical amplification

Mechanism of the Yb–Er energy transfer in fluorozirconate glass

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