Growth of Yb-doped Y2O3, Sc2O3, and Lu2O3 single crystals by the micro-pulling-down technique and their optical and scintillation characterization

Fukabori, Akihiro; Chani, Valery; Kamada, Kei; Yoshikawa, Akira

doi:10.1016/j.jcrysgro.2012.01.027

Cited by 16 publications

(9 citation statements)

References 30 publications

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Section: Crystal Growthmentioning

confidence: 47%

“…The CH-grown sample showed a full width at half maximum (FWHM) of 286 arcsec in the XRC as shown in Figure 6. This value is better comparing with the 393 arcsec obtained for Yb1%:Lu2O3 grown by the μ-PD method [4]. Figure 7 shows in-line transmittance measurements of the CH-grown undoped Lu2O3, Yb1%doped Lu2O3, and Lu0.18Hf0.82O1.91 compared with measurement for a Yb1%:Lu2O3 sample grown by the μ-PD method with a Re crucible.…”

Section: Crystal Growthmentioning

confidence: 73%

“…The µ-PD method is a quick and economical way of surveying materials. To date, single-crystal growths by the µ-PD method of undoped, Tm-, and Yb-doped Lu 2 O 3 have been reported [2][3][4]. The use of rhenium (Re) as a crucible material, with a melting point of 3158 • C, made it possible to grow Lu 2 O 3 .…”

Section: Introductionmentioning

confidence: 99%

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Growth of Lu2O3 and HfO2 Based High Melting Temperature Single Crystals by Indirect Heating Method Using Arc Plasma

et al. 2020

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A novel single-crystal growth method was developed, using arc plasma and metal melt, for a quick survey of high melting point materials. Single crystals of Yb-doped Lu2O3, Lu0.388Hf0.612O1.806, and Lu0.18Hf0.82O1.91, with melting points of 2460, 2900, and 2840 °C, respectively, were grown by an indirect heating method using arc plasma. We refer to this indirect heating growth method as the core heating (CH) method. The CH-grown Yb1%-doped Lu2O3 sample showed a full width at half maximum of 286 arcsec in the X-ray rocking curve. This value is better than the 393 arcsec obtained for the crystal grown by the micro-pulling-down (μ-PD) method. The Yb charge transfer state (CTS) emission was observed at 350 nm in the Yb1%-doped Lu2O3 and Lu0.18Hf0.82O1.91. In the case of the μ-PD method, using a rhenium (Re) crucible, absorption due to Re contamination and a resulting reduction in the Yb CTS emission were confirmed. However, contamination did not influence the properties observed in the crystals grown by the CH method.

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Section: Crystal Growthmentioning

confidence: 47%

Section: Crystal Growthmentioning

confidence: 73%

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Growth of Lu2O3 and HfO2 Based High Melting Temperature Single Crystals by Indirect Heating Method Using Arc Plasma

et al. 2020

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“…In 2011, it is an impressive 670 W output power that was obtained in CW regime also using thin disk technology with a Lu 2 O 3 :Yb 3+ crystal [6]. Several methods have again been put forward these last three years to grow pure and RE' 3+ -doped (RE'=Tm, Er or Yb) cubic RE 2 O 3 (RE=Y, Lu or Sc) single crystals [2,5,7,8]. In this work, we present spectroscopic characterizations of newly flux grown cubic and Yb 3+ -doped RE 2 O 3 (RE=Y,Gd,Lu) single crystals [5], focusing more particularly on Lu 2 O 3 :Yb 3+ and Y 2 O 3 :Yb 3+ crystals, while also showing the heretofore unknown absorption, stimulated emission and anti-Stokes emission spectra of highly-doped cubic Gd 2 O 3 :Yb 3+ crystals.…”

Section: Introductionmentioning

confidence: 99%

Spectroscopic properties of newly flux grown and highly Yb3+-doped cubic RE2O3 (RE=Y, Gd, Lu) laser crystals

et al. 2015

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We have developed laser grade and highly Yb 3+-doped cubic rare-earth sesquioxides (RE 2 O 3 , RE = Y, Gd, Lu) single crystals by means of a newly designed high-temperature solution growth method which gives them spectroscopic properties different from those obtained by high-temperature solidification methods. Absorption and emission cross sections, visible anti-Stokes emission, fluorescence decays of the new cubic Gd 2 O 3 :Yb 3+ single crystals are presented and compared to those of Y 2 O 3 :Yb 3+ and Lu 2 O 3 :Yb 3+ crystals. The case of cubic Gd 2 O 3 :Yb 3+ is particularly interesting since its basic spectroscopic properties have never been detailed and we were capable of achieving Yb-doping level as high as 20%.

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“…Several methods have been put forward these last three years to grow pure and RE 03 -doped (RE 0 Tm, Er, or Yb) cubic RE 2 O 3 (RE Y, Lu, or Sc) single crystals [11][12][13][14]. The main current drawback of the classical methods is that they do not circumvent the high melting point of these compounds (∼2400°C − 2500°C), and for some of them, a series of structural phase transitions occur upon cooling.…”

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confidence: 99%

Laser demonstration with highly doped Yb:Gd_2O_3 and Yb:Y_2O_3 crystals grown by an original flux method

et al. 2013

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We present, to the best of our knowledge, the first laser demonstration of an Yb-doped Gd(2)O(3) cubic crystal. This crystal was obtained by the flux method using an original borate-based solvent, which was particularly well suited to the growth of rare earth sesquioxide crystals at half the working temperature of classical growth techniques. This flux method is a very interesting alternative for the production of laser sesquioxide crystals, not only because it provides access to new matrices of the cubic polymorph, but also because it permits high Yb(3+)-doping levels for these crystals. The first laser results of two highly Yb(3+)-doped sesquioxides, namely Gd(2)O(3) and Y(2)O(3), grown by this flux method are presented here, including the Ti:sapphire and diode pumping configurations. Laser efficiencies and emission spectra for these two crystals were studied and compared.

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Growth of Yb-doped Y2O3, Sc2O3, and Lu2O3 single crystals by the micro-pulling-down technique and their optical and scintillation characterization

Cited by 16 publications

References 30 publications

Growth of Lu2O3 and HfO2 Based High Melting Temperature Single Crystals by Indirect Heating Method Using Arc Plasma

Growth of Lu2O3 and HfO2 Based High Melting Temperature Single Crystals by Indirect Heating Method Using Arc Plasma

Spectroscopic properties of newly flux grown and highly Yb3+-doped cubic RE2O3 (RE=Y, Gd, Lu) laser crystals

Laser demonstration with highly doped Yb:Gd_2O_3 and Yb:Y_2O_3 crystals grown by an original flux method

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