电光调Q晶体研究进展
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摘要
电光调Q激光系统由于峰值功率高,在医疗、美容、测量、加工以及军工等领域得到了广泛应用,而电光调Q晶体是获得高峰值功率激光脉冲输出的核心光电材料,随着短脉冲、高重率、大功率激光系统的应用需求发展和技术进步,对电光调Q晶体的性能要求也不断提高.本文对目前常用的电光调Q晶体的基本特性、晶体制备技术和电光调Q应用技术等研究进展进行了综述,主要包括铌酸锂晶体、磷酸二氘钾晶体、低温相偏硼酸钡晶体、磷酸氧钛铷晶体和硅酸镓镧晶体等,认为实用化的电光调Q晶体材料研究和开发工作亟待突破,在相当长一段时期内,电光系数高、激光损伤阈值高、性能稳定、温度适用性高和成本低的电光晶体材料探索仍然是晶体材料研究领域的重要课题.
Electro-optic Q-switched laser systems with high peak power have been widely applied in medical, cosmetology, measurement,processing, military industry, and other fields, while the crystal for electro-optic Q-switch is the core optoelectronic material for outputting high peak power pulse laser. With the technological progress and the development of short pulse, high repeat frequency and high power laser system application, the performance of crystals for electro-optic Q-switch is constantly improved. The paper reviews the research progress on basic characteristics, crystal preparation technology and electro-optic Q-switch application technology of several important electro-optic crystals for Q-switches including lithium niobate(LN) crystal, deuterated potassium dihydrogen phosphate(DKDP) crystal, low temperature phase barium metaborate(BBO) crystal, rubidium oxygen titanium phosphate(RTP)crystal, langasite(LGS) crystal and potassium titanium oxide phosphate(KTP) crystal, and propose that the research on practical electro-optic crystals for Q-switches is urgent to make breakthroughs. For a long time to come, exploring the electro-optic crystal materials, with high electro-optic coefficient, high laser damage threshold, stable performance, high temperature applicability and low cost, will be still an important issue in the field of crystal materials research.
Electro-optic Q-switched laser systems with high peak power have been widely applied in medical, cosmetology, measurement,processing, military industry, and other fields, while the crystal for electro-optic Q-switch is the core optoelectronic material for outputting high peak power pulse laser. With the technological progress and the development of short pulse, high repeat frequency and high power laser system application, the performance of crystals for electro-optic Q-switch is constantly improved. The paper reviews the research progress on basic characteristics, crystal preparation technology and electro-optic Q-switch application technology of several important electro-optic crystals for Q-switches including lithium niobate(LN) crystal, deuterated potassium dihydrogen phosphate(DKDP) crystal, low temperature phase barium metaborate(BBO) crystal, rubidium oxygen titanium phosphate(RTP)crystal, langasite(LGS) crystal and potassium titanium oxide phosphate(KTP) crystal, and propose that the research on practical electro-optic crystals for Q-switches is urgent to make breakthroughs. For a long time to come, exploring the electro-optic crystal materials, with high electro-optic coefficient, high laser damage threshold, stable performance, high temperature applicability and low cost, will be still an important issue in the field of crystal materials research.
引文
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14 颜涛.高品质铌酸锂、钽酸锂晶体的生长、结构与性质研究.博士学位论文.济南:山东大学,2011.122
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16 Matthias B T,Remeika J P.Ferroelectricity in the ilmenite structure.Phys Rev,1949,76:1886–1887
17 Ballman A A.Growth of piezoelectric and ferroelectric materials by the Czochraiski technique.J Am Ceramic Soc,1965,48:112–113
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20 Volk T R,Pryalkin V I,Rubinina N M.Optical-damage-resistant LiNbO3:Zn crystal.Opt Lett,1990,15:996–998
21 Yamamoto J K,Kitamura K,Iyi N,et al.Increased optical damage resistance in Sc2O3-doped LiNbO3.Appl Phys Lett,1992,61:2156–2158
22 Kong Y F,Wen J K,Wang H F.New doped lithium niobate crystal with high resistance to photorefraction—LiNbO3:In.Appl Phys Lett,1995,66 :280–281
23 Kokanyan E P,Razzari L,Cristiani I,et al.Reduced photorefraction in hafnium-doped single-domain and periodically poled lithium niobate crystals.Appl Phys Lett,2004,84:1880–1882
24 李树奇,刘士国,孔勇发,等.四价掺杂铌酸锂晶体抗光折变性能研究.人工晶体学报,2006,35:474–477
25 孙军,孔勇发,李兵,等.等径控制系统的改进及在光学级铌酸锂生长中的应用.人工晶体学报,2004,33:305–309
26 孙军,张玲,孔勇发,等.大直径、高掺镁铌酸锂晶体的生长及其紫外光折变性能研究.人工晶体学报,2005,34:576–580
27 张玲,韩文卿,孙军,等.高温度稳定性系列铌酸锂电光调Q开关的研制.人工晶体学报,2010,39:931–935
28 王富章,陈彬,孙军,等.低应力铌酸锂电光调Q开关的研究.人工晶体学报,2013,42:1315–1318
29 Liu C,Yang K,Zhao S,et al.88 ns multi-millijoule LiNbO3 electro-optically Q-switched Tm:LuAG laser.Optics Commun,2015,355:167–171
30 Liu C,Zhao S,Li Y,et al.Stable kilo-hertz electro-optically Q-switched Tm,Ho:YAP laser at room temperature.Optics Laser Tech,2016,81:189 –193
31 王波,房昌水,王圣来,等.KDP/DKDP晶体生长的研究进展.人工晶体学报,2007,36:247–253
32 Zhang L,Yu G,Zhou H,et al.Study on rapid growth of 98%deuterated potassium dihydrogen phosphate(DKDP)crystals.J Cryst Growth,2014,401:190–194
33 Foley R J,Karpendo V P,Adams C H,et al.Design of the target area for the national ignition facility.In:Proc.SPIE 3047,Solid State Lasers for Application to Inertial Confinement Fusion:Second Annual International Conference.1997,3047:331–342
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35 Mima K,Kato Y,Azechi H,et al.Recent progress of implosion experiments with uniformity-improved GEKKO XII laser facility at the Institute of Laser Engineering,Osaka University.Phys Plasmas,1996,3:2077–2083
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