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1、利用可调激光二极管进行光谱调节年级：2011专业：光学工程学号：G111201008姓名：宦君工作单位：理波光电科技（无锡）有限公司摘要：Frequency-modulationspectroscopyisapowerfultoolthatcanachievehighsensitivitieswitharelativelysimpleexperimentalsetup.Tunablediodelasers,inparticular,canmakethesetupevensimplerbecausetheyprovideanarrow,tunableout
2、putthatcanbeeasilymodulated.AsnewdiodelaserwavelengthsbecomeavailablethefieldofTDLAS(tunablediodelaserabsorptionspectroscopy)willcontinuetogrowrapidly,particularlywhencombinedwithnonlinearopticaltechniquesthatallowconversionofavailablewavelengthstotheblue,20UV,21,22orfarinfrared.
3、8调频光谱是一种强大的工具,可以用一个相对简单的实验装置获得高敏感性。可调谐二极管激光、特别是,可以使它的步骤更为简单,因为它们可以提供一个狭小的、可调的输出,并且可以很容易地调制。随着新型二极管激光波长变得可用TDLAS的领域(可调谐二极管激光吸收光谱)将继续快速增长,尤其是当结合非线性光学技术,允许转换可用的波长蓝、20、21、22紫外线或远红外线8引言Tunablediodelasersareidealforopticalspectroscopybecauseoftheirnarrowlinewidths,largetuningrangesands
4、tableoutputs.Becausetheyaremorecompactandruggedthantraditionalspectroscopicopticalsources,可调谐激光二极管是理想的用于光谱学的一种器件，因为他们有着较窄的线宽，较大的调节范围和比较稳定的输出。因为相比较传统的光谱光源有着更小的体积并且更坚固。likeTi:Sapphirelasers,dyelasers,color-centerlasers,hollow-cathodelamps,andnonlinearsystems(e.g.opticalparametricos
5、cillators),theyhaveenabledspectroscopicmethodstobeusednotonlyinlaboratoryenvironmentsbutalsointherealworld.Applicationsofdiode-laserspectroscopyincluderemotesensing,LIDAR,lasercoolingandtrappingofatoms,1frequencystandards,2lengthstandards,3tracegasdetection,4andprocessmonitoring.
6、5像钛宝石激光器,染料激光器、激光、空心阴极灯色中心,和非线性系统(如光学参量振荡器),他们使光谱方法用于不仅在实验室环境的同时也在现实世界。应用程序的二极管激光光谱学包括遥感、激光雷达、激光冷却和俘获原子频率标准,1,2,3长度标准微量气体检测、4和过程监控5Theycanbeusedtomonitorenvironmentallyimportantspecies,suchasmethane,carbondioxide,andwater.Insemiconductormanufacturing,theycanbeusedforclosed-loopco
7、ntrolofdepositionprocesses,includingelectron-beam,sputtering,molecular-beamepitaxy(MBE),andthermalevaporation,resultinginasignificantincreaseintheyieldofexistingdevicesandmakingpossiblenewandimprovedones.Indeedthefieldhasgrownsolargethatareviewoftheresearchjournalsrevealsthatitha
8、sdevelopeditsownacronym,TDLAS,whichstand
