RE∶YAP(RE=Nd,Tm)晶体缺陷与光谱分析
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摘要
采用提拉法生长Nd∶YAP和Tm∶YAP晶体,利用吸收和荧光光谱表征样品。结果表明:经真空退火,提高了晶体质量。Nd∶YAP晶体在808 nm附近有较强的吸收,与商用激光二极管的发射波长匹配较好,获得了1064 nm荧光输出;Tm∶YAP晶体在790 nm附近有一定的吸收,在1.87μm处的荧光峰对应于3F4→3H6能级之间的跃迁,有利于激光的高能量调Q输出。
Nd∶ YAP and Tm∶ YAP crystals were grown by the Czoehralski method,which improves the crystal quality after vacuum annealing.The absorption and fluorescence spectra of Nd∶ YAP and Tm∶ YAP crystals were measured.Nd ∶ YAP crystals have strong absorption in the vicinity of 808 nm,which matched emission wavelength of commercial laser diodes better,obtained the 1064 nm fluorescence output;Tm∶ YAP crystal has a certain absorption in the near 790 nm,the fluorescence peak at 1.87 μm corresponding to the3F4→3H6level transition,which is better for high energy Q output of laser.
Nd∶ YAP and Tm∶ YAP crystals were grown by the Czoehralski method,which improves the crystal quality after vacuum annealing.The absorption and fluorescence spectra of Nd∶ YAP and Tm∶ YAP crystals were measured.Nd ∶ YAP crystals have strong absorption in the vicinity of 808 nm,which matched emission wavelength of commercial laser diodes better,obtained the 1064 nm fluorescence output;Tm∶ YAP crystal has a certain absorption in the near 790 nm,the fluorescence peak at 1.87 μm corresponding to the3F4→3H6level transition,which is better for high energy Q output of laser.
引文
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[2]Antonio A,Federico P,Giancarlo R,et al.Jenssen.Diode-pumped Nd∶BaY2F8Picosecond Laser[J].Optics Communications,2008,281:6094-6096.
[3]付秀伟,贾志泰,董春明,等.掺钕钆镓石榴石晶体及其性能优化的研究进展[J].人工晶体学报,2013,42(11):2220-2229.Fu X W,Jia Z T,Dong C M,et al.Research Progress of Neodymium Doped Gadolinium Gallium Garnet Crystal and Its Performance Optimization[J].Journal of Synthetic Crystals,2013,42(11):2220-2229(in Chinese).
[4]王永政,李静,王继扬,等.Yb∶NdPO4晶体的生长与光谱性质[J].人工晶体学报,2012,41(4):480-483.Wang Y Z,Li J,Wang J Y,et al.Growth and Spectral Properties of Yb∶NdPO4Crystal[J].Journal of Synthetic Crystals,2012,41(4):480-483.
[5]唐剑锋,黄艺东.Tm3+掺杂和Tm3+/Ho3+共掺2.0μm波段激光晶体研究[J].人工晶体学报,2012,41(S1):47-57Tang J F,Huang Y D.Research on Tm3+Doped and Tm3+/Ho3+Codoped 2.0μm Waveband Laser Crystals[J].Journal of Synthetic Crystals,2012,41(S1):47-57.
[6]Bensalah A,Shimamura K,Sudesh V,et al.Growth of Tm,Ho-codoped YLiF4and LuLiF4Single Crystals for Eyesafe Lasers[J].J.Cryst.Growth,2001,223(4):539-544.
[7]McFarlane R A,Upconversion Laser in BaY2F8∶Er 5%Pumped by Ground-state and Excited-state Absorption[J].Opt.Soc.Am.B,1994,11:871-880.
[8]李春,张学建,王成伟,等.Tm,Ho∶BaY2F8晶体光谱性能与能量传递[J].无机化学学报,2011,27(1):6-10.Li C,Zhang X J,Wang C W,et al.Spectral Properties and Energy Transfer of Tm,Ho∶BaY2F8Crystal[J].Chinese J.Inorg.Chem.,2011,27(1):6-10(in Chinese).
[9]Li H J,Zhao G J,Zeng X H,et al.Study on Cracking and Low-angle Grain Boundary Defects in YAlO3Crystal[J].Materials Letters,2004,58(26):3253-3256.
[10]Yao B Q,Li L J,Zheng L L,et al.Diode-pumped Continuous Wave and Q-switched Operation of a c-cut Tm,Ho∶YAlO3Laser[J].Optics Express,2008,16(7):5075-5081.
[11]Li G S,Guo X B,Lu J,et al.Application of Several New Procedures to Improve the Quality of Czochralski Grown Nd3+∶YAlO3Crystals[J].Journal of Crystal Growth,1992,118(3-4):371-376.
[12]Yang Y,Lu Y L,Wang J,et al.Distribution of Dislocation Etch Pits and Its Influence on the Optical Properties of 2μm Waveband Tm∶YAP Laser Crystal[J].Journal of Alloys and Compounds,2008,455(1-2):1-4.
[13]莫小刚,王永国,朱建慧,等.大尺寸掺钕和掺铥铝酸钇晶体的生长和退火技术[J].人工晶体学报,2007,36(3):520-525.Mo X G,Wang Y G,Zhu J H,et al.Growth and Annealing Techniques of Large-sized Nd∶YAP and Tm∶YAP Crystals[J].Journal of Synthetic Crystals,2007,36(3):520-525(in Chinese).
[14]Yoshikawa A,Boulon G,Laversenne L,et al.Growth and Spectroscopic Analysis of Yb3+-doped Y3Al5O12Fiber Single Crystals[J].J.Appl.Phys.,2003,94(9):5479-5488.
[15]Cornacchia F,Lieto A D,Tonelli M.2μm Lasers with Fluoride Crystals:Research and Development[J].Prog Quantum Electron,2009,33:61-109.
[16]陆燕玲.掺铥铝酸钇晶体Tm∶YAP制备与性能研究[D].上海:上海交通大学博士学位论文,2007.Lu Y L.Study on Czoehralski Growth and Properties of Tm∶YAP Laser Crystals[D].Shanghai:Doctor Degree Thesis of Shanghai Jiao Tong University,2007(in Chinese).