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采用提拉法生长出了高浓度掺铒（35 at%）钇钪镓石榴石（Er：YSGG）激光晶体. 测试了该晶体在340–1700 nm波段内的吸收光谱，对其中Er3+的实验能级进行了分析指认. 用Er：YSGG的102个实验Stark能级，拟合了它的自由离子参数和晶体场参数，均方根误差（拟合精度）σ为10.34 cm-1. 结果表明，参数化Stark 能级的拟合结果与实验光谱符合得较好. 将拟合得到的Er：YSGG实验结果与文献中已报道Er：YAG 的自由离子参数和晶体场参数进行了比较. 指出Er：YSGG具有较强的晶体场相互作用或许是其激光效率较高的主要原因之一.
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关键词:
- Er3+：Y3Sc2Ga3O12晶体 /
- 吸收光谱 /
- 晶体场模型 /
- 能级拟合
Er3+-doped Y3Sc2Ga3O12 (Er:YSGG) single crystal is grown by Czochralski method successfully, and the absorption spectra are measured in a wider spectral wavelength range (340-1700 nm). The experimental energy levels are analyzed and identified. The free-ion and crystal-field parameters are fitted by the experimental energy levels with a root mean square deviation of 10.34 cm-1, and 102 Stark energy levels of Er3+ in YSGG host crystals are assigned. It indicates that the fitting results of Stark energy levels are more satisfactory with the experimental spectra. Finally, the fitting results of free-ion and crystal-field parameters are compared with those already reported of Er:YAG crystal. A conclusion is drawn that the Er:YSGG has higher laser efficiency than Er:YAG, which may result from Er:YSGG that has a strong crystal field interaction.-
Keywords:
- Er3+：Y3Sc2Ga3O12 crystal /
- absorption spectrum /
- crystal-field calculation /
- energy levels fitting
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[5] Wang Y, You Z Y, Li J F, Zhu Z J, Ma E, Tu C Y 2009 J. Phys. D: Appl. Phys. 42 215406
[6] Kim K H, Venable D D, Brown L A, Lee J H 1991 J. Appl. Phys. 69 2841
[7] Sun D L, Luo J Q, Xiao J Z, Zhang Q L, Jiang H H, Yin S T, Wang Y F, Ge X W 2008 Appl. Phys. B 92 529
[8] Zharikov E V, Kuratev I I, Laptev V V, Naselskii S P, Ryabov A I, Toropkin G N, Shestakov A V, Shcherbakov I A 1984 Bull. Acad. Sci. USSR Phys. Ser. 48 103
[9] Lei Y Q, Song H W, Yang L M, Yu L X, Liu Z X, Pan G H, Bai X, Fan L B 2005 J. Chem. Phys. 123 74710
[10] Weber M J 1967 Phys. Rev. 157 262
[11] Gruber J B, Hills M E, Morrison C A, Turner G A 1988 Phys. Rev. B 37 8564
[12] Duan C K, Tanner P A, Makhov V N, Kirm M 2007 Phys. Rev. B 75 195130
[13] Rudowicz C, Chua M, Reid M F 2000 Physica B 291 327
[14] Christiane G W, Koen B 1996 In: Gschneidner K A, Eyring L (ed) Handbook on The Physics and Chemistry of Rare Earths (Amsterdam, New York, Oxford: North-holland Publishing Company) 23 pp143-152
[15] Karbowiak M, Edelstein N M, Drozdzynski J, Kossowski K 2002 Chem. Phys. 277 362
[16] Xia S D 1994 Group Theory and Spectroscopy (Beijing: Science Press) pp262-283
[17] Newman D J, Ng Betty 2000 Crystal Field Handbook (Cambridge: Cambridge University Press) pp43-46
[18] Zhang Q L, Ning K J, Xiao J, Ding L H, Zhou W L, Liu W P, Yin S T, Jiang H H 2010 Chin. Phys. B 19 087501
[19] da Gama A A S, da Sa Gilberto F 1981 J. Chem. Phys. 75 2583
[20] Devi A R, Jayasankar C K, Reid M F 1994 J. Alloys Comp. 207 74
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[1] Sun D L, Luo J Q, Zhang Q L, Xiao J Z, Xu J Y, Jiang H H, Yin S T 2008 J. Lumin. 128 1886
[2] Nakazawa E, Shionoya S 1970 Phys. Rev. Lett. 25 1710
[3] Sun D L, Luo J Q, Zhang Q L, Xiao J Z, Liu W P, Wang S F, Jiang H H, Yin S T 2011 J. Cryst. Growth 318 669
[4] Stokowski S E, Randles M H, Morris R C 1988 IEEE J. Quantum Elect. 24 934
[5] Wang Y, You Z Y, Li J F, Zhu Z J, Ma E, Tu C Y 2009 J. Phys. D: Appl. Phys. 42 215406
[6] Kim K H, Venable D D, Brown L A, Lee J H 1991 J. Appl. Phys. 69 2841
[7] Sun D L, Luo J Q, Xiao J Z, Zhang Q L, Jiang H H, Yin S T, Wang Y F, Ge X W 2008 Appl. Phys. B 92 529
[8] Zharikov E V, Kuratev I I, Laptev V V, Naselskii S P, Ryabov A I, Toropkin G N, Shestakov A V, Shcherbakov I A 1984 Bull. Acad. Sci. USSR Phys. Ser. 48 103
[9] Lei Y Q, Song H W, Yang L M, Yu L X, Liu Z X, Pan G H, Bai X, Fan L B 2005 J. Chem. Phys. 123 74710
[10] Weber M J 1967 Phys. Rev. 157 262
[11] Gruber J B, Hills M E, Morrison C A, Turner G A 1988 Phys. Rev. B 37 8564
[12] Duan C K, Tanner P A, Makhov V N, Kirm M 2007 Phys. Rev. B 75 195130
[13] Rudowicz C, Chua M, Reid M F 2000 Physica B 291 327
[14] Christiane G W, Koen B 1996 In: Gschneidner K A, Eyring L (ed) Handbook on The Physics and Chemistry of Rare Earths (Amsterdam, New York, Oxford: North-holland Publishing Company) 23 pp143-152
[15] Karbowiak M, Edelstein N M, Drozdzynski J, Kossowski K 2002 Chem. Phys. 277 362
[16] Xia S D 1994 Group Theory and Spectroscopy (Beijing: Science Press) pp262-283
[17] Newman D J, Ng Betty 2000 Crystal Field Handbook (Cambridge: Cambridge University Press) pp43-46
[18] Zhang Q L, Ning K J, Xiao J, Ding L H, Zhou W L, Liu W P, Yin S T, Jiang H H 2010 Chin. Phys. B 19 087501
[19] da Gama A A S, da Sa Gilberto F 1981 J. Chem. Phys. 75 2583
[20] Devi A R, Jayasankar C K, Reid M F 1994 J. Alloys Comp. 207 74
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