Structure and spectral properties of Nd3+-doped KBaGd(MoO4)3 crystal with a disorder structure

Meng, Xiangming; Lin, Zhoubin; Zhang, Lizhen; Huang, Yao‐Zeng; Wang, Guofu

doi:10.1039/c0ce00922a

Cited by 26 publications

(15 citation statements)

References 24 publications

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“…This is evidence of the dominant contribution of inhomogeneous broadening to the spectra line-width in the low symmetry structure. The emission cross sections for the laser channel from 4 F 3/2 to 4 I 9/2 , 4 I 11/2 and 4 I 13/2 were calculated through the Füchtbauer-Ladenburg (FL) formula [12], [18]. These values are 1.11×10 −20 , 6.25×10 −20 and 2.13×10 −20 cm 2 , respectively.…”

Section: Resultsmentioning

confidence: 99%

“…They include host crystals with disordered structures such as NaLn(WO 4 ) 2 (Ln = Y or Gd, I 4 1 / a ) [2], [3], SrLaGa 3 O 7 () [4], Ca 3 La 2 (BO 3 ) 4 ( Pnma ) [5], Li 3 Ba 2 Ln 3 (MO 4 ) 8 (Ln = Y, La or Gd, M = W or Mo, C 2/ c ) [6−11], KBaGd(MO 4 ) 3 (M = W or Mo, C 2/ c ) [12], [13] and CaNb 2 O 6 ( Pbcn ) [14]. These species can induce inhomogeneous broadening of optical spectra from a disordered crystal lattice.…”

Section: Introductionmentioning

confidence: 99%

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Growth, Structure, Thermal Properties and Spectroscopic Characteristics of Nd3+-Doped KGdP4O12 Crystal

et al. 2014

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A single crystal of Nd3+-doped KGdP4O12 was successfully grown with the top-seeded solution growth and slow cooling (TSSG−SC) technique. It crystallizes in space group C2/c with cell parameters a = 7.812(2) Å, b = 12.307(3) Å, c = 10.474(2) Å, β = 110.84(3)° and Z = 4. The IR and Raman spectra also indicated that the phosphoric polyhedra of Nd:KGdP4O12 has a cyclic symmetry. The chemical composition of the crystal was analyzed and the distribution coefficient of Nd3+ was calculated. The crystal morphology of KGdP4O12 was identified using X-ray diffraction. The compound has good thermal stability to 920°C. Its specific heat and thermal conductivity were determined for potential applications. The spectral properties of Nd:KGdP4O12 indicates that it exhibits broad absorption and emission bands, which are attributed to low symmetry of the crystal. The broad absorption band around 798 nm has a full-width at half-maximum (FWHM) of 14.8 nm and is suitable for AlGaAs laser diode pumping. Moreover, 5 at% Nd3+-doped KGdP4O12 crystal has a long luminescence lifetime of 300 μs and a high quantum efficiency of 96%.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Growth, Structure, Thermal Properties and Spectroscopic Characteristics of Nd3+-Doped KGdP4O12 Crystal

et al. 2014

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“…The Gd 3+ ions could provide appropriate sites for Nd 3+ replacements because the Gd 3+ and Nd 3+ ions have the same valence, and additionally offer multiple distributions of cationic environments around these sites due to the coexistence of K + , Ba 2+ and Gd 3+ ions. Therefore, when Nd 3+ replaces Gd 3+ ions, the high disordered environment around the Nd 3+ dopant ions leads to inhomogeneous broadening of the absorption and emission bands [16], [17].…”

Section: Resultsmentioning

confidence: 99%

Growth, Structure and Spectroscopic Characterization of Nd3+-Doped KBaGd(WO4)3 Crystal with a Disordered Structure

et al. 2012

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The undoped and the Nd3+:KBaGd(WO4)3 crystals were grown by the top seeded solution growth (TSSG) method from a flux of K2W2O7. The structure of the pure crystal was determined by the single-crystal X-ray diffraction method. It crystallizes in the monoclinic symmetry with space group C2/c. In the structure, K+ and Ba2+ ions share the same 8f site with occupancy of 0.464 and 0.536, respectively. The investigation of spectral properties of Nd3+:KBaGd(WO4)3 crystal indicates that it exhibits broad absorption and emission bands, which are attributed to locally disordered environments around the Nd3+ centers. The broad absorption band is suitable for diode laser pumping.

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“…A wafer with a size of Φ 28 mm As a result, the cell volume of the Cr,Tm,Ho,Pr:LuYAG crystal becomes larger and the density becomes smaller. Such a broad absorption band is very suitable for LD pumping, because it can decrease the crucial control to temperature stability of the output wavelength of the AlGaAs LD [28][29][30], which is advantageous to improve the pumping efficiency.…”

Section: Characterizationsmentioning

confidence: 99%

Growth, structure, and spectroscopic properties of a Cr³⁺, Tm³⁺, Ho³⁺, and Pr³⁺co-doped LuYAG single crystal for 2.9 μm laser

et al. 2016

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A new laser crystal Lu 2.4 Y 0.6 Al 5 O 12 (LuYAG) co-doped with Cr 3+ , Tm 3+ , Ho 3+ , and Pr 3+ ions was grown successfully by the Czochralski method for the first time. The structure parameters of the Cr,Tm,Ho,Pr:LuYAG crystal are determined by the X-ray Rietveld refinement method. Main absorption bands near 426 and 782 nm are observed, and the fluorescence spectrum excited by 450 nm or 783 nm LD presents emission band near 2.911 μm, indicating that the co-doped Cr 3+ and Tm 3+ions can be utilized as the sensitizer for the Ho 3+ ions. The lifetimes of the 5 I 6 and 5 I 7 levels of the Ho 3+ ions were measured and fitted to be 0.070 ms and 1.852 ms, respectively. The energy transfer efficiencies of 5 I 6 (Ho 3+ ) → 3 F 3,4 (Pr 3+ ) and 5 I 7 (Ho 3+ ) → 3 F 2 (Pr 3+ ) + 3 H 6 (Pr 3+ ) processes were calculated, showing that the Pr 3+ ions can play a role of the deactivator for the Ho 3+ ions. Furthermore, the energy transfer mechanisms among the Cr 3+ , Tm 3+ , Ho 3+ , and Pr 3+ ions are studied. These results suggest that the Cr,Tm,Ho,Pr:LuYAG crystal is a new promising laser medium operated around 2.9 μm under a flash lamp or 783 nm LD pumping.

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Structure and spectral properties of Nd3+-doped KBaGd(MoO4)3 crystal with a disorder structure

Cited by 26 publications

References 24 publications

Growth, Structure, Thermal Properties and Spectroscopic Characteristics of Nd3+-Doped KGdP4O12 Crystal

Growth, Structure, Thermal Properties and Spectroscopic Characteristics of Nd3+-Doped KGdP4O12 Crystal

Growth, Structure and Spectroscopic Characterization of Nd3+-Doped KBaGd(WO4)3 Crystal with a Disordered Structure

Growth, structure, and spectroscopic properties of a Cr³⁺, Tm³⁺, Ho³⁺, and Pr³⁺co-doped LuYAG single crystal for 2.9 μm laser

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Structure and spectral properties of Nd3+-doped KBaGd(MoO4)3 crystal with a disorder structure

Cited by 26 publications

References 24 publications

Growth, Structure, Thermal Properties and Spectroscopic Characteristics of Nd3+-Doped KGdP4O12 Crystal

Growth, Structure, Thermal Properties and Spectroscopic Characteristics of Nd3+-Doped KGdP4O12 Crystal

Growth, Structure and Spectroscopic Characterization of Nd3+-Doped KBaGd(WO4)3 Crystal with a Disordered Structure

Growth, structure, and spectroscopic properties of a Cr3+, Tm3+, Ho3+, and Pr3+co-doped LuYAG single crystal for 2.9 μm laser

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Growth, structure, and spectroscopic properties of a Cr³⁺, Tm³⁺, Ho³⁺, and Pr³⁺co-doped LuYAG single crystal for 2.9 μm laser