资源描述:
《高重频双波长复合干扰激光器设计》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、高重频双波长复合干扰激光器设计*收稿日期:2018-01-15基金项目:脉冲功率激光技术国家重点实验室主任基金资助项目(SKL2015ZR01)作者简介:叶庆(1981-),男,四川泸州人,博士,助理研究员,E-mail:yeqing0518@sina.com范一松(通信作者),男,安徽萧县人,硕士,工程师,E-mail:fan_ys01@163.com.叶庆1,范一松12,王磊1,卞进田1(1.国防科技大学脉冲功率激光技术国家重点实验室安徽合肥230037;2.中国科学院安徽光学精密机械研究所安徽光子器件与材料省级实验室安徽合肥230031)摘要:为解决基频光高重频与倍频光高平均功率之间的
2、矛盾,设计了一台干扰用高重频双波长复合输出激光器。静态仿真了泵浦源效率、激光晶体受热和受力分布、激光高斯模式特征,得到了该激光器的复合输出特性。动态仿真调Q频率、倍频晶体长度对复合输出的影响以及分析倍频晶体热效应,发现在泵浦功率和谐振腔结构不变的前提下,需先满足基频光高重频工作,再优化倍频晶体长度和控制倍频晶体温度可提高倍频光的输出功率。按上述仿真结论开展验证实验表明:当KTP晶体长度为12mm,输出镜透过率为10%,重复频率为50kHz时,设计的激光器基频光平均功率为18.98W,倍频光平均功率为2.22W,与仿真结论一致。关键词:固体激光器;双波长复合输出;高重频;仿真与实验中图分类号:
3、TN242文献标志码:A 文章编号:DesignoftheDual-wavelengthCompositeJammingLaserwithHigh-repetitiveFrequencyYEQing1,FANYisong12,WANGLei1,BIANJintian1(1.StateKeyLaboratoryofpulsedpowerlasertechnology,NationalUniversityofDefenseTechnology,Hefei230037,China;2.AnhuiProvincialKeyLaboratoryofPhotonicDevicesandMateria
4、ls,AnhuiInstituteofOpticsandFineMechanics,ChineseAcademyofSciences,Hefei230031,China)Abstract:Inordertosolvethecontradictionbetweenhighrepetitionrateoffundamentalwave(FW)andhighaveragepowerofsecond-harmonicwave(SHW),anew1064nm/532nmdual-wavelengthcompositejamminglaserwithhigh-repetitivefrequencywas
5、designed.Firstly,thecompositeoutputcharacteristicsofthelaserwereobtainedbythestaticanalysisofthepumpsource’sefficiency,heatandforcedistributionofcrystal,andtheGaussmodeoflaser.Then,theinfluenceonthedual-wavelengthcompositeoutputwasanalyzedbychangingtheQ-switchingfrequency,thelengthofthesecondharmon
6、icgeneration(SHG)crystalandbysimulatingthethermaleffectofSHGcrystal.ItisfoundthatthehighfrequencyofFWshouldbesatisfiedfirst,andtheoutputpowerofSHWcanbeimprovedbyoptimizingthelengthoftheSHGcrystalandcontrollingthetemperatureofSHGcrystalundertheconditionoftheconstantpumpingpowerandthestructureofthere
7、sonator.Finally,thesimulationconclusionwasverifiedbyexperiment.TheexperimentalresultsshowthatwhenthelengthofKTPcrystalischosenas12mm,thetransmissivityoftheoutputmirrorisfixedto10%,andtheQ-switchingfrequency