潘万艺,江云坤

• 1:福州大学物理与信息工程学院

摘要(Abstract)：

用一个780 nm的光栅外腔反馈半导体激光器作为泵浦源,使用环形腔和一块I型的一阶准相位晶体实现了780 nm的腔增强倍频.计算基频光波长与晶体最佳匹配温度的关系,实验测得基频光波长为781.12 nm和781.79 nm时的最佳匹配温度.通过合理的腔型设计及参数选择,获得390 nm紫光的连续波输出.整个环形腔通过Pound-Drever-Hall方法来锁定.在基频光的功率为88 mW时,获得了紫光的最大输出功率为4.3 mW,倍频转换效率为4.9%.

关键词(KeyWords)： 倍频;环形腔;PPKTP晶体

Abstract:

Keywords:

基金项目(Foundation): 教育部留学回国基金(LXKQ1002);; 福建省自然科学基金资助项目(2012J01010)

作者(Author): 潘万艺,江云坤

参考文献(References)：

• [1]Lundeman J H,Jensen O B,Andersen P E,et al.High power 404 nm source based on second harmonic generation inPPKTP of a tapered external feedback diode laser[J].Opt Exp,2008,16(4):2486-2493.
• [2]Lucas-Leclin G,Paboeuf D,Georges P,et al.Wavelength stabilization of extended-cavity tapered lasers with volumeBragg gratings[J].Appl Phys B,2008,91(3/4):493-498.
• [3]Shi B S,Tomita A.Highly efficient generation of pulsed photon pairs with bulk periodically poled potassium titanyl phos-phate[J].J Opt Soc Am B,2004,21(12):2081-2084.
• [4]Fayaz G R,Ghotbi M,Ebrahim-Zadeh M.Efficient second-harmonic generation of tunable femtosecond pulses into theblue in periodically poled KTP[J].Appl Phys Lett,2005,86:061110-061112.
• [5]White R T,McKinnie I T,Butterworth S D,et al.Tunable single-frequency ultraviolet generation from a continuous-wave Ti:sapphire laser with an intracavity PPLN frequency doubler[J].Appl Phys B,2003,77(6/7):547-550.
• [6]Meyn J P,Fejer M M.Tunable ultraviolet radiation by second-harmonic generation in periodically poled lithium tantalate[J].Opt Lett,1997,22(16):1214-1216.
• [7]Arie A,Rosenman G,Mahal V,et al.Green and ultraviolet quasi-phase-matched second harmonic generation in bulkperiodically-poled KTiOPO4[J].Opt Commun,1997,142(4/6):265-268.
• [8]Wang S,Pasiskevicius V,Hellstrom J,et al.First-order type II quasi-phase-matched UV generation in periodically poledKTP[J].Opt Lett,1999,24(14):978-980.
• [9]Pierrou M,Laurell F,Karlsson H,et al.Generation of 740 mW of blue light by intracavity frequency doubling with afirst-order quasi-phase-matched KTiOPO4 crystal[J].Opt Lett,1999,24(4):205-207.
• [10]Wang S,Pasiskevicius V,Laurell F,et al.Ultraviolet generation by first-order frequency doubling in periodically poledKTiOPO4[J].Opt Lett,1998,23(24):1883-1885.
• [11]Wang F Y,Shi B S,Chen Q F,et al.Efficient cw violet-light generation in a ring cavity with a periodically poled KTP[J].Opt Commun,2008,281(15/16):4114-4117.
• [12]Zhang B,Ding Y J,Zotova I B.Efficient ultrafast ultraviolet generation based on frequency doubling in short-period pe-riodically-poled KTiOPO4[J].Appl Phys B,2010,99(4):629-632.
• [13]吕百达.激光光学:光束描述、传输变换与光腔技术物理[M].北京:高等教育出版社,2003:386-393.
• [14]Black E D.An introduction to Pound-Drever-Hall laser frequency stabilization[J].Am J Phys,2001,69(1):79-87.
• [15]Ghosh G.Temperature dispersion in KTP for nonlinear devices[J].IEEE Photon Technol Lett,1995,7(1):68-70.
• [16]Villa F,Chiummo A,Giacobino E,et al.High-efficiency blue-light generation with a ring cavity with periodically poledKTP[J].J Opt Soc Am B,2007,24(3):576-580.
• [17]Hansson G,Karlsson H,Wang S,et al.Transmission measurements in KTP and isomorphic compounds[J].ApplOpt,2000,39(27):5058-5069.