Ytterbium-doped Y2O3 nanoparticle silica optical fibers for high power fiber lasers with suppressed photodarkening

Yoo, Seongwoo; Kalita, Mridu P.; Boyland, A.J.; Webb, A. S.; Standish, Robert; Sahu, J.K.; Paul, Mukul Chandra; Das, Satya P.; Bhadra, Shyamal Kumar; Pal, Mrinmay

doi:10.1016/j.optcom.2010.04.093

Cited by 37 publications

(18 citation statements)

References 7 publications

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“…For the calculations we used the value of Yb 3+ lifetime (τYb) equal to 830 μs that was measured for the Tm 3+ -free fibers [4]. The comparable value of 810 μs of Yb 3+ lifetime for Tm 3+ -free fibers produced by the same technology with similar concentration was obtained in [10].…”

Section: Resultsmentioning

confidence: 87%

“…We estimated the standard deviation error in ET-efficiency to be around 2%. The luminescence measurements of Tm-free Yb-doped fibers of similar composition produced with the same technology with the concentration of about 1.6 wt.% of Yb [10] showed that Yb 3+ experiences single-exponential decay with a lifetime of about 800 s. This value significantly exceeded the Yb decay constant τeff of the fibers with a similar concentration, LCT-6, LCT-8, see Table 2.…”

Section: Resultsmentioning

confidence: 99%

“…Yb/Tm co-doped yttrium-alumino-silicate (YAS) fibers were fabricated by modified chemical vapor deposition (MCVD) process in conjunction with solution doping (SD) technique. Since 1987, SD technique has been used to incorporate rare-earths [12] and nanoparticles [10,[13][14][15][16] into the silica glass matrix of optical fibers.…”

Section: Fiber Fabrication and Materials Analysismentioning

confidence: 99%

“…The typical lifetimes for the 3 F4 level of Tm 3+ vary from 200 to 650 μs, and for the 2 F5/2 level of Yb 3+ from 470 to 830 μs depending on the host composition [4,[8][9][10]. Despite the large importance of the ET processes, there are not so much data in the literature on the efficiency of the ET from Yb 3+ to Tm 3+ ions, which makes our work particularly relevant.…”

Section: Introductionmentioning

confidence: 97%

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Emission decay and energy transfer in Yb/Tm Y-codoped fibers based on nano-modified glass

et al. 2015

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Abstract:We report the results of experimental investigation and theoretical analysis of luminescence decay in Yb/Tm Y-codoped fibers based on nano-modified glass. Based on the experimental results, numerical simulations allowed us to estimate the energy transfer efficiency between Yb 3+ and Tm 3+ ions. It was shown that yttria enhances the Yb/Tm energy transfer making fibers with Y-codoping promising for development of the light sources for laser applications and of up-conversion emitters for visualization applications. These fibers demonstrate energy transfer efficiency of 50 %, which makes them attractive for diode-pumping of Ybions at 975 nm wavelength.

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Section: Resultsmentioning

confidence: 87%

Section: Resultsmentioning

confidence: 99%

Section: Fiber Fabrication and Materials Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 97%

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Emission decay and energy transfer in Yb/Tm Y-codoped fibers based on nano-modified glass

et al. 2015

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“…Lasers based on nanoparticle garnets -instead of the corresponding macroscopic crystals -can reach better performance. 13 Doping of nanostructured active-medium with rare earth elements, often with ytterbium, is another recent development direction in advanced laser science. 14,15 In the present work, nanoparticles consisting of elements relevant for such studies -aluminum, ytterbium, and oxygenhave been fabricated, and their electronic and geometric structure has been investigated.…”

Section: Introductionmentioning

confidence: 99%

Alloying and oxidation of in situ produced core-shell Al@Yb nanoalloy particles—An “on-the-fly” study

Zhang

Andersson

Mikkelä

et al. 2014

The Journal of Chemical Physics

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Core-shell-structured nanoalloy particles with an Al-dominated interior covered by few Yb monolayers have been fabricated using a vapor-aggregation method involving magnetron sputtering. The radially segregated structure of the Yb-Al nanoparticles has been disclosed by “on-the-fly” photoelectron spectroscopy monitoring of the nanoparticle beam in Yb 4f and Al 2p electron binding energy regions. Both, the binding energy values and the electron microscopy images taken on the deposited nanoparticles, allow estimating their dimensions to be in the 5–10 nm range. The photoelectron spectroscopy results suggest that in these nanoparticles no trivalent Yb – the typical case for the macroscopic Yb-Al alloy – is present. The oxidation of preformed Yb-Al nanoparticles was successfully attempted, leading to the appearance of divalent Yb surface oxide – in contrast to the bulk macroscopic Yb which is trivalent in the oxide. Our results suggest that at intermediate oxygen exposures “sandwich-like” nanoparticles of YbO/Yb/Al were synthesized. At higher O2 exposures, the oxygen seems to penetrate all the way to the Yb-Al interface. The results of the present study have to be considered when photonic applications of Yb-doped garnet nanoparticles are planned.

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Luminescence

Zottnick¹,

Sorg²,

Müller‐Buschbaum³

et al. 2019

Encyclopedia of Inorganic and Bioinorganic Chemistry

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Ytterbium-doped Y2O3 nanoparticle silica optical fibers for high power fiber lasers with suppressed photodarkening

Cited by 37 publications

References 7 publications

Emission decay and energy transfer in Yb/Tm Y-codoped fibers based on nano-modified glass

Emission decay and energy transfer in Yb/Tm Y-codoped fibers based on nano-modified glass

Alloying and oxidation of in situ produced core-shell Al@Yb nanoalloy particles—An “on-the-fly” study

Luminescence

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