ABSTRACT The absorption and fluorescence spectra of Er3+:LiGdF4 crystal was measured at room temperature. Base on the Judd-Ofelt theory, the intensity parameters of Er3+ in LiGdF4 crystal were determined, Ω2=0.905×10-20cm2, Ω4=2.47×10-20cm2 and Ω6=4.92×10-20cm2. The values of the radiative transition probabilities, branching ratios, integrated emission cross-section and radiative lifetimes of excited states of Er3+ in LiGdF4 crystal were calculated. The stimulated emission cross-section was also evaluated for the 4I13/2→4I15/2 transitions. In comparisons with other Er3+ doped laser crystals, Er3+:LiGdF4 crystal has potential as a promising laser crystal.
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nullC. Li, Y. Zhang, X. Zhang, D. Miao, H. Lin, M. Tonelli, F. Zeng and J. Liu, "Spectral Properties and Parameters Calculation of Er:Ligdf4 Crystal," Materials Sciences and Applications, Vol. 2 No. 8, 2011, pp. 1161-1165. doi: 10.4236/msa.2011.28156.
 S. Q. Man, E. Y. B. Pun and P. S. Chung, “Upconversion luminescence of Er3+ in Alkali Bismuth Gallate Glasses,” Applied Physics Letters, Vol. 77, No. 4, 2000, pp. 483-
 R. A. Mcfarlane. “Upconversion Laser in BaY2F8:Er 5% Pumped by Ground-State and Excited-State Absorption,” Optics InfoBase, Vol. 11, No. 5, 1994, pp. 871-800.
 V. Sudesh and J. A. Piper, “Spectroscopy, Modeling, and Laser Operation of Thulium-doped Crystals at 2.3 μm,” IEEE Journal of Quantum Electronics, Vol. 36, No. 7, 2000, pp. 879-884. doi.org/10.1109/3.848362
 R. Sosa, I. F?ldvári, A. Watterich, A. Munoz, R. S. Maillard and G. Kugel, “Photoluminescence of Er3+ ions in Bi2TeO5 Single Crystals,” Journal of Luminescence, Vol. 111, No. 1-2, 2005, pp. 25-35.
 R. C. Stoneman and L. Esterowitz, “Efficient, Broadly Tunable, Laser-pumped Tm: YAG and Tm: YSGG cw Lasers,” Optics Letters, Vol. 15, No. 9, 1990, pp. 486-488. doi.org/10.1364/OL.15.000486
 E. C. Honea, R. J. Beach, S. B. Sutton, J. A. Speth, S. C. Mitchell, J. A. Skidmore, M. A. Emanuel and S. A. Payne, “115W Tm: YAG CW Diode-pumped Solid-State Laser,” IEEE Journal of Quantum Electron, Vol. 33, No. 9, 1997, pp. 1592-1600. doi.org/10.1109/3.622641
 S. A. Payne, L. K. Smith, W. L. Kway, J. B. Tassano and W. F. Krupke, “The Mechanism of Tm to Ho Energy Transfer in LiYF4,” Journal of Physics: Condensed Matter, Vol. 4, No. 44, 1992, pp. 8525-8542.
 F. Cornacchia, D. Parisi, C. Bernardini, A. Toncelli and M. Tonelli, “Efficient, Diode-pumped Tm3+: BaY2F8 Vibronic Laser,” Optics Express, Vol. 12, No. 9, 2004, pp. 1982-1989. doi.org/10.1364/OPEX.12.001982
 L. H. Guilbert, J. Y. Gesland, A. Bulou and R. Retoux, “Structure and Raman Spectroscopy of Czochralski-Gr-
own Barium Yttrium and Barium Ytterbium Fluorides Crystals,” Materials Research Bulletin, Vol. 28, No. 9, 1993, pp. 923-930.
 B. M. Walsh, N. P. Barnes and B. Di Bartolo, “The Temperature Dependence of Energy Transfer between the Tm 3F4 and Ho5I7 Manifolds of Tm-sensitized Ho Luminescence in YAG and YLF,” Journal of Luminescence, Vol. 90, No. 1-2, 2000, pp. 39-48.
 B. R. Judd, “Optical Absorption Intensities of Rare-Earth Ions,” Physical Review, Vol. 127, No. 3, 1962, pp. 750-
 G. S. Ofelt, “Intensities of Crystal Spectra of Rare-Earth Ions,” The Journal of Chemical Physics, Vol. 37, No. 3, 1962, pp. 511-520. doi.org/10.1063/1.1701366
 E. Comini, A. Toncelli, M. Tonelli, E. Zannoni, E. Cavalli, A. Speghini and M. Bettinelli, “Optical Spectroscopy and Fluorescence Dynamics of Er3+ in Ca3Sc2Ge3O12 Crystal,” Journal of the Optical Society of American B, Vol. 14, No. 8, 1997, pp. 1938-1944.
 J. Amina, B. Dussardierb, T. Schweizera, and M. Hempsteada, “Spectroscopic Analysis of Er3+ transitions in Lithium Niobate,” Journal of Luminescence, Vol. 69, No.1, 1996, pp. 17-26.
 A. A. Kaminskii, V. S. Mironov, A. Kornienko, S. N. Bagaev, G. Boulon, A. Brenier and B. Di Bartolo, “New Laser Properties and Spectroscopy of Orthorhombic Crystals YAlO3:Er3+. Intensity Luminescence Characteritics, Stimulated Emission, and Full Set of Squared Reduced-Matrix Elements |<α[SL]J| |U(t)||α'[S'L']J'>|2 for Er3+ Ions,” Physica Status Solidi (a), Vol. 151, No.1, 1995, pp. 231-255. doi.org/10.1002/pssa.2211510127
 A. A. Kaminskii, A. G. Petrosyan, A. G. Denisenko, T. I. Butaeva, V. A. Fedorov and S. E. Sarkisov, “Spectrosco
pic Properties and 3 μm Stimulated Emission of Er3+ ions in the (Y1-xErx)3Al5O12 and (Lu1-xEr3)3Al5O12 Garnet Crystal Systems,” Physica Status Solidi (a), Vol. 71, No. 2, 1982, pp. 291-312.
 R. Sosa, I. F?ldvári, A. Watterich, A. Munoz, R. S. Maillard and G. Kugel, “Photoluminescence of Er3+ Ions in Bi2TeO5 Single Crystals,” Journal of Luminescence, Vol. 111, No. 1-2, 2005, pp. 25-35.
 I. Sokólska, E. Heumann, S. Kück, T. Lukasiewicz, “Laser Oscillation of Er3+:YVO4 and Er3+, Yb3+:YVO4 Crystals in the Spectral Range around 1.6 μm,” Applied Physics B Lasers and Optics, Vol. 71, No. 6, 2000, pp. 893-896.
 W. Zhao, L. Z. Zhang and G. F. Wang, “Growth, Thermal and Spectral Characterization of Er3+- doped Li2Gd4 (Mo-
O4)7crystal,” Journal of Crystal Growth, Vol. 311, No. 8, 2009, pp. 2336-2340.
 F. Cornacchia, A. Di Lieto and M. Tonelli, “2μm Lasers with Fluoride Crystals: Researchand Development,” Progress in Quantum Electronics, Vol. 33, No. 1-2, 2009, pp. 61-109. doi.org/10.1016/j.pquantelec.2009.04.001
 J. L. Doualan, P. Camy, R. Moncorge, E. Daran, M. Couchaud, B. Ferrand, “Latest Developments of Bulk Crystals and Thin Films of Rare-Earth Doped CaF2 for Laser Applications,” Journal of Fluorine Chemistry, Vol. 128, No. 4, 2007, pp. 459-464.