Growth of LGSO: Ce crystals by the Czochralski method

Sidletskiy, O.; Bondar, V. G.; Grynyov, B.; Kurtsev, D.; Baumer, V. N.; Беликов, К. Н.; Shtitelman, Z. V.; Tkachenko, S.; Zelenskaya, O. V.; Starzhinsky, N.; Тарасов, В. А.

doi:10.1134/s1063774509070207

Cited by 12 publications

(8 citation statements)

References 6 publications

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“…However, when the symmetry of LGSO changes to P2 1 /c, the Lu 3+ ions occupy sites coordinated by seven oxygens (LnO 7 ) whereas the Gd 3+ are located in sites with nine-oxygen coordination. In accordance with [13,14], Gd 3+ ions in the LGSO structure must tend to replace Lu 3+ ions in Lu1 sites where the average Lu-O distance of 2.32 Å is larger than that of 2.23 Å for Lu2 site. The 4 G 5/2 → 6 H 5/2 emission spectrum in LGSO containing 81 at% of Gd 3+ is dominated by a strong and narrow line at 17794 cm −1 (562 nm).…”

Section: Room Temperature Absorption and Emission Spectramentioning

confidence: 71%

“…It was demonstrated by Sidletskiy et. al [13,14] that in Ce:(Lu x Gd 1-x ) 2 SiO 5 with different degree of cation substitution, Lu 3+ ions favour the LnO 6 sixfold polyhedra whereas Gd 3+ ions preferably occupy LnO 7 sevenfold ones as long as the C2/c lattice symmetry is protected. However, when the symmetry of LGSO changes to P2 1 /c, the Lu 3+ ions occupy sites coordinated by seven oxygens (LnO 7 ) whereas the Gd 3+ are located in sites with nine-oxygen coordination.…”

Section: Room Temperature Absorption and Emission Spectramentioning

confidence: 99%

“…Solid solution crystals (Lu x Gd 1-x ) 2 SiO 5 (LGSO) have been considered aiming to overcome these drawbacks. Investigation on growth, crystal structure and scintillation characteristics of cerium-doped LGSO host has revealed that LGSO forms crystals belonging to the C2/c space group inherent to LSO for x value above 0.2 and to the P2 1 /c space group inherent to GSO for x value below 0.2 [12][13][14]. In a more recent paper it has been reported that the change of the LGSO symmetry occurs at 0.15 < x < 0.17 [15].…”

Section: Introductionmentioning

confidence: 99%

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Effect of substitution of lutetium by gadolinium on emission characteristics of (Lu_xGd_1-x)_2SiO_5: Sm^3+ single crystals

Ryba‐Romanowski¹,

Strzęp²,

Lisiecki³

et al. 2014

Opt. Mater. Express

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Single crystals of (Lu x Gd 1-x ) 2 SiO 5 :Sm (0.5 at%) with x = 0.19 (81% Gd3+) and x = 0.11 (89% Gd 3+ ) belonging respectively to the C2/c and P2 1 /c space groups were grown by the Czochralski method under nitrogen atmosphere. Detailed investigation of their spectroscopic properties were performed with the aim of understanding the effect of structural modification on emission characteristics of incorporated Sm 3+ ions with a special attention directed to a laser potential associated with yellow emission line. It was inferred from low temperature optical spectra that almost all emission intensity in the host with C2/c symmetry comes from one of two available Sm 3+ sites, whereas two Sm 3+ sites contribute to emission in the host with P2 1 /c symmetry. Excitation spectra of Sm 3+ emission recorded in the VUV-UV region between 100 nm and 350 nm made it possible to locate the energy of CT transition at about 6.11 eV and to assess the low energy limit for the 4f 5 → 4f 4 5d 1 transitions of Sm 3+ to about 6.81 eV. It implies that in the two systems studied these energies are advantageously high thereby preventing the contribution of intense allowed transitions to an adverse excited state absorption of both blue pump radiation and yellow emission. Experiments of optical amplification of yellow emission were performed employing a pump-and-probe technique in order to verify this implication. It was found that for a LGSO:Sm 3+ crystal having the C2/c symmetry an increase of the pump power density from 20 mJ/cm 2 to 50 mJ/cm 2 at a constant power probe density of 150 μW/cm 2 brings about a positive gain growing from about 0.25 to 2 [cm −1 ]. In the same conditions a maximum gain value of 1 cm −1 was measured for LGSO:Sm 3+ crystal having the P2 1 /c symmetry. It was concluded that the former system is promising for the design of all-solid-state yellow lasers. 85-93 (2012). 9. C. Li, R. Moncorge, J. C. Souriau, C. Borel, and Ch. Wyon, "Efficient 2.05 μm room temperature Y 2 SiO 5 :Tm 3+ cw laser," Opt. Commun. 101(5-6), 356-360 (1993). 10. C. Yan, G. Zhao, L. Su, X. Xu, L. Hang, and J. Xu, ""Growth and spectroscopic characteristics of Yb:GSO single crystal," J. Phys. Condens. Matter 18(4), 1325-1333 (2006). 11. M. Jacquemet, C. Jacquemet, N. Janel, F. Druon, F. Balembois, P. Georges, J. Petit, B. Viana, D. Vivien, and B.

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Section: Room Temperature Absorption and Emission Spectramentioning

confidence: 71%

Section: Room Temperature Absorption and Emission Spectramentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of substitution of lutetium by gadolinium on emission characteristics of (Lu_xGd_1-x)_2SiO_5: Sm^3+ single crystals

Ryba‐Romanowski¹,

Strzęp²,

Lisiecki³

et al. 2014

Opt. Mater. Express

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“…Lu content in obtained crystals was determined by the two independent methods -inductively coupled plasma atomic emission spectroscopy (ICP-AES) and X-ray diffraction (for details of methods, see [7]). …”

Section: Discussionmentioning

confidence: 99%

“…Furthermore, crystal strength increases by mechanism of volume compensation in the lattice. It was determined in [6] and confirmed in [7] that polymorph transition P 2 1 /c-C2/c in LGSO crystals occurs with substitution of 10 to 20% of Gd 3+ ions by Lu 3+ ions (0.86 Å) (in dependence on the seed type used at growth). Change of type of lattice structure leads to modification of crystal properties; this effect was demonstrated on scintillation properties of LGSO:Ce crystals [7].…”

Section: +mentioning

confidence: 99%

Mechanical Properties and Lattice Parameters of Lu_2xGd_2(1-x)SiO₅:Ce Scintillation Crystals

et al. 2010

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Structural and mechanical characteristics of complex oxide compounds Lu 2x Gd 2−2x SiO 5 :Ce (LGSO) crystals were studied at different cation ratio in the host. For this purpose, a series of LGSO crystals with Lu concentration 5-70 at.% has been grown by the Czochralski method. Anisotropy of mechanical properties for these materials has been studied. The obtained results can be useful at choice of optimal growth direction for crystals and at mechanical processing of scintillation elements.

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Growth, spectral properties, and laser demonstration of Nd:(Lu0.5Gd0.5)2SiO5 crystal

Zhang

et al. 2011

Laser Phys. Lett.

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Growth of LGSO: Ce crystals by the Czochralski method

Cited by 12 publications

References 6 publications

Effect of substitution of lutetium by gadolinium on emission characteristics of (Lu_xGd_1-x)_2SiO_5: Sm^3+ single crystals

Effect of substitution of lutetium by gadolinium on emission characteristics of (Lu_xGd_1-x)_2SiO_5: Sm^3+ single crystals

Mechanical Properties and Lattice Parameters of Lu_2xGd_2(1-x)SiO₅:Ce Scintillation Crystals

Growth, spectral properties, and laser demonstration of Nd:(Lu0.5Gd0.5)2SiO5 crystal

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Growth of LGSO: Ce crystals by the Czochralski method

Cited by 12 publications

References 6 publications

Effect of substitution of lutetium by gadolinium on emission characteristics of (Lu_xGd_1-x)_2SiO_5: Sm^3+ single crystals

Effect of substitution of lutetium by gadolinium on emission characteristics of (Lu_xGd_1-x)_2SiO_5: Sm^3+ single crystals

Mechanical Properties and Lattice Parameters of Lu2xGd2(1-x)SiO5:Ce Scintillation Crystals

Growth, spectral properties, and laser demonstration of Nd:(Lu0.5Gd0.5)2SiO5 crystal

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Mechanical Properties and Lattice Parameters of Lu_2xGd_2(1-x)SiO₅:Ce Scintillation Crystals