激光二极管阵列泵浦固体激光器驱动电源及谐振腔的研究

《激光二极管阵列泵浦固体激光器驱动电源及谐振腔的研究》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、摘要二极管激光器阵列泵浦固体激光器(DPSSL)具有体积小泵浦效率高运行可靠等优点对DPSSL的研究逐渐成为当今激光领域的重要研究方向之一本文针对二极管激光器阵列(LDA)侧面泵浦固体激光器在激光打标系统中连续运行的需要对3+DPSSL系统的稳流源驱动控制电路和LDA阵列模块侧面泵浦NdYAG固体激光器的谐振腔等问题进行了研究主要内容包括一下几部分以大功率MOSFET管运算放大器精密检测电阻为核心研制出负反馈控制型大电流连续二极管激光器阵列驱动电源主电路用双积分AD转换器来完成模数转换并驱动数码管显示工作电流值研究影响DPSSL系统正常工作时的各种因素设计出用单片微控制器配以人工控制

2、按键各种检测元件LED显示管构成的开关电路故障自动保护和报警指示电路编写了DPSSL驱动控制系统的MCS51汇编语言程序3+3+研究LDA模块侧面泵浦NdYAG棒的热透镜效应并对所选用的NdYAG棒在稳定泵浦功率下的热焦距进行了估算推导出有源谐振腔ABCD传输矩阵讨论了谐振腔稳定性条件和输出模式的热稳定性条件设计了DPSSL谐振腔的结构尺寸并用基于有限元的数值矩阵方法计算了激光输出模式关键词LDA侧面泵浦固体激光器稳流源驱动热透镜焦距有源谐振腔IAbstractThestudyonthediodelaserarrays(LDA)pumpedsolid-statelaser(DPSSL

3、)hasbeenanimportantresearchfieldbecauseofitscompactconfiguration,highpumpingefficiencyandconvenientmaintenance.Inthispaper,aconstant-currentpowersupplyfor3+DPSSLandLDAside-pumpedNdYAGresonator,whichcanbeusedintocontinuousrunninglasermarkingsystem,hasbeeninvestigated,includingthefollowingaspects

4、1.Themaincircuitofthelarge-currentCWpowersupplyforLDAhasbeendeveloped.Thiscircuitismainlycomposedoftwohigh-powerMOSFETs,anop-amplifierandaprecisiondetectingresistor,andisinnegativefeedbackconfiguration.Abi-integralA/DconverterisusedtoconverttheanalogvoltagesignalintothedigitalsignalandtodriveLE

5、Dtodisplaythecurrentvalue.2.FactorsaffectingtheoperationoftheDPSSLsystemhavebeenstudied.Onthebasisofthesingle-chipmicro-controller,pressbuttonsandsensors,thecontrollingswitchcircuit,auto-protectingcircuitandalarmingcircuitaredesigned.3.ThedrivingandcontrollingprogramoftheDPSSLsystemhasbeencompi

6、ledinMCS-51assemblerlanguage.3+4.ThethermaleffectoftheLDAside-pumpedNdYAGrodhasbeenanalyzed,3+andtheestimationofthefocallengthofthethermallenshasbeengivenwhenNdYAGrodisstablypumped.5.TheABCDmatrixofanactiveresonatorhasbeendeduced,andtheconditionsofthestableresonatorandthethermal-insensitivelase

7、routputmodehavebeendiscussed.6.ThedimensionoftheDPSSLresonatorhasbeendrawn,andthelasermodeshavebeencalculatedwithanumericalmatrixmethodbasedonfiniteelementmethod(FEM).KeywordsLDAside-pumpedSSLconstant-current-sourcedrivingthermalf