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采用坩埚下降法生长了Yb: CaF2-SrF2晶体,测试了该晶体的吸收和荧光光谱 以及在不同温度下晶体的热扩散系数和热膨胀系数,并且计算了晶体的热膨胀系数以及在常温下的热导率. 采用对比的方法,对晶体的吸收光谱,荧光光谱,热学性能进行了分析.从吸收和荧光光谱结果表明: 在掺杂相对较高浓度的SrF2的混晶中, Yb3+吸收截面和发射截面比较大. Yb: CaF2-SrF2 (19%)晶体在1040 nm附近的发射截面比较大,光谱也比较宽. 这说明在掺杂相同浓度Yb时,混晶中CaF2, SrF2的比例不同,晶体的光谱性质不同, 主要原因是在混晶中晶体的无序度不同,晶体对称性降低,形成低对称光学中心. 从热扩散系数计算的热导率结果看出晶体具有比较好的热导率.
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关键词:
- Yb: CaF2-SrF2 /
- 吸收光谱 /
- 荧光光谱 /
- 热学性质
Yb: CaF2-SrF2 crystals are grown by Bridgman technique. The spectroscopic properties, thermal diffusion coefficients and thermal expansion coefficients at different temperatures are studied. Thermal conductivity at 300 K and thermal expansion coefficient are calculated. The absorption spectra, fluorescence spectra, thermal properties of crystals are analyzed by comparison method. The results show that the absorption and emission cross sections are larger in the high concentration SrF2 disordered crystal. And also the emission cross section is large and wide at 1040 nm in the Yb: CaF2-SrF2 (19%) crystal. It demonstrates that for different ratios of CaF2 and SrF2 in the disordered crystals, the spectroscopic properties are different. The main possible reason is the different disorders, low symmetry, low symmetry optical centers in the disordered crystal. It can also be seen that the disordered crystal has a good thermal conductivity.-
Keywords:
- Yb: CaF2-SrF2 /
- spectroscopic properties /
- thermal properties /
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[22] Basiev T T, Doroshenko M, Konyushkin V A 2011 Advances in Optical Materials (AIOM) paper: AIThA3
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[25] Siebold M, Bock S, Schramm U, Xu B, Doualan J L, Camy P, Moncorgé R 2009 Appl. Phys. B 97 327
[26] Alimov O K, Basiev T T, Doroshenko M E, Fedorov P P, Konyushkin V A, Kouznetsov S V, Nakladov A N, Osiko V V, Jelinkova H, Šulc J 2009 Advanced Solid-State Photonics, OSA Technical Digest Series (CD) (Optical Society of America). paper WB25
[27] Zeng X H, Zhao G J, Xu X D, Li H J, Xu J, Zhao Z W, He X M, Pang H Y, Jie M Y, Yan C F 2005 J. Cryst. Growth 274 106
[28] Yu Y G, Wang J Y, Zhang H J, Wang Z P, Yu H H, Sun S Q, Xia H R, Jiang M H 2009 Opt. Express 17 9270
[29] Ge W, Zhang H, Wang J, Liu J, Xu X, Hu X, Jiang M 2005 J. Appl. Phys. 98 013542
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[1] Haumesser P H, Gaumé R, Benitez J M, Viana B, Ferrand B, Aka G, Vivien D 2001 J. Cryst. Growth 233 233
[2] Chénais S, Druon F, Balembois F, Georges P, Gaumé R, Haumesser P H, Viana B, Aka G P, Vivien D 2002 J. Opt. Sco. Am. B 19 1083
[3] Haumesser P H, Gaumé R, Viana B, Vivien D 2002 J. Opt. Soc. Am. B 19 2365
[4] Jiang H D, Wang J Y, Zhang H J, Hu X B, Burns P, A Piper J, Piper J A 2002 Chem. Phys. Lett. 361 493
[5] Lebedev V A, Voroshilov I V, Ignatiev B V, Gavrilenko A N, Isaev V A, Shestakov A V 2001 J. Lumin 92 139
[6] Li P X, Zou S Z, Zhang X X, Li G 2010 Chin. Phys. B 19 074211
[7] Wang S M, Du S F, Lu J, Zhang D X, Feng B H 2007 Chin. Phys. Soc. 1786-04
[8] Kong L J, Xiao X S, Yang C X 2010 Chin. Phys. B 19 074212
[9] Siebold M, Bock S, Schramm U, Xu B, Doualan J L, Camy P, Moncorgé R 2009 Appl. Phys. B 97 327
[10] Ricaud S, Papadopoulos D N, Pellegrina A, Balembois F, Georges P, Courjaud A, Camy P, Doualan J L, Moncorgé R, Druon F 2011 Opt. Lett. 36 1602
[11] Lucca A, Debourg G, Jacquemet M, Druon F, Balembois F, Georges P, Camy P, Doualan J L, Moncorgé R 2004 Opt. Lett. 29 2767
[12] Ricaud S, Papadopoulos D N, Camy P, Doualan J L, Moncorgé R, Courjaud A, Mottay E, Georges P, Druon F 2010 Opt. Lett. 35 3757
[13] Ricaud S, Druon F, Papadopoulos D N, Camy P, Doualan J L, Moncorgé R, Delaigue M, Zaouter Y, Courjaud A, Georges P, Mottay E 2010 Opt. Lett. 35 2415
[14] Siebold M, Hein J, Kaluza M C, Uecker R 2007 Opt. Lett. 32 1818
[15] Silva M A P, Messaddeq Y, Briois V, Poulain M, Villain F, Ribeiro S J L 2002 Solid State Ionics 147 135
[16] Sorokin N I, Buchinskaya I I, Fedorov P P, Sobolev B P 2008 Inorg. Mater. 44 234
[17] Karimov D N, Komar'kova O N, Sorokin N I, Bezhanov V A, Chernov S P, Popov P A, Sobolev B P 2010 Crystallogr. Rep. 55 518
[18] Mouchovski J T, Temelkov K A, Vuchkov N K 2011 Prog. Cryst. Growth Charact Mater 57 1
[19] Klimma D, Rabe M, Bertrama R, Uecker R, Parthier L 2008 J. Cryst. Growth 310 152
[20] Basiev T T, Vasil'ev S V, Doroshenko M E, Konyushkin V A, Kuznetsov S V, Osiko V V, Fedorov P P 2007 Quant. Electron 37 934
[21] Basiev T T, Doroshenko M, Fedorov P, Konyushkin V A, Kuznetsov S, Osiko V, Akchurin M 2008 Opt. Lett. 33 521
[22] Basiev T T, Doroshenko M, Konyushkin V A 2011 Advances in Optical Materials (AIOM) paper: AIThA3
[23] Youngmen R E, Smith C M 2008 Phys. Rev. B 78 014112
[24] Fedorov P P, Osiko V V, Basiev T T, Orlovskii Yu V, Dukel'skii K V, Mironov I A, Demidenko V A, Smirnov A N 2007 Nanotechnologies in Russia 2 95
[25] Siebold M, Bock S, Schramm U, Xu B, Doualan J L, Camy P, Moncorgé R 2009 Appl. Phys. B 97 327
[26] Alimov O K, Basiev T T, Doroshenko M E, Fedorov P P, Konyushkin V A, Kouznetsov S V, Nakladov A N, Osiko V V, Jelinkova H, Šulc J 2009 Advanced Solid-State Photonics, OSA Technical Digest Series (CD) (Optical Society of America). paper WB25
[27] Zeng X H, Zhao G J, Xu X D, Li H J, Xu J, Zhao Z W, He X M, Pang H Y, Jie M Y, Yan C F 2005 J. Cryst. Growth 274 106
[28] Yu Y G, Wang J Y, Zhang H J, Wang Z P, Yu H H, Sun S Q, Xia H R, Jiang M H 2009 Opt. Express 17 9270
[29] Ge W, Zhang H, Wang J, Liu J, Xu X, Hu X, Jiang M 2005 J. Appl. Phys. 98 013542
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