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ID:37357543
大小:2.59 MB
页数:71页
时间:2019-05-22
《小型光泵亚毫米波激光宽带频谱特性的研究》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、中山大学硕士学位论文小型光泵亚毫米波激光宽带频谱特性的研究姓名:梁奂晖申请学位级别:硕士专业:无线电物理指导教师:罗锡璋2003.5.10论文越酗:专鼓;硕士生:髫导教繇:小型光泵亚毫米波激光宽带频谱特性的研究嚣缓毫壤溪檠氛晖梦鼹璋教授摘要零谂文黯枣燮笼泵巍麓寒滚激舞熬爨簇符蕊菠豢谱鞲蘩结稳遴孬繇襄。栗惩了半经热密度理论矩阵璁论对豫溉米波激光过程进行理论分析,根据增髓箍加原理薅激炎遵程熬丸蕤缓豢统篱毡娥理,趱迭霞潼泉缮到驻褒寒渡激嚣器黥辕基颤潞祷捶裁线。在深入研巍王律气体压强,泵浦臻攀等工豫参数和添貊缓冷气体对输出频谱宽带
2、特性的影响后,可以发现彩Raman效应和ACStark效应在其中有繁关键靛瓣塞义。遂露辩影蘸多Raraan楱至终爨鹣嚣素避牙嚣入系统懿矫究,嫡多Raman过耩的相互律雨来解释亚毫米波激巍鼯输出的颓谱特征,如宽带结橡,多纵模效应秘尖峰绺构等。程系统地研究了鼹频输出的特点靼形成桃理、影璃宽羲特毪及鼗港鞲缓缱蓰赘器晕擎透素瑟,箍爨扩震耍瓷寒袭激怒赣鑫谯缕黉落范围的黼律。最霜还介绸了实验所用的驱逛米波激光频测麓系统。在实验上对理涂爨究缝袋{拿出实验验程,缝聚褒骡理论骚究缝聚与实验缝暴撼镣较妊。鼹窕残暴辩捂譬褥磷蠢凝蒂辕惑,频率夫黎
3、霉滚续霹嚣清静夺登麓泵薮糍寒滚激建器,、jc寸亚毫米波频谱资源的开发利用,有积极的作用。关键谶:党鞭监毫米渡≤爻,,频培晦≤,窝矶糙曼精磊用,AcStark效应义4-Title:StudyONWideSpectrumCharacteristicofMiniatureOpticallyPumpedSMMWLaserMajor:RadioPhysicsName:LiangHuanghuiSupervisor:Prof.【_UOXizhangABSTRACTlnthispapeLwide—bandcharacteristican
4、dfinestructureinspectrumofminiatureopticallysuhm.
5、limeterwavelaserwerestudiedprincipally.Basedonsemi-classicaIdensitymatrixtheorytheemittingprocessofsubmillimeterwavelaserwasanalyzedtheoretically,thenine*energy--levelsystemwassimplifiedaccordingtothetheoryofgainto
6、talization,andthespectralcharacteristiccurvewasobtainedfromcalculationresultwithiterationmethod.Itwasfoundthatmulti,RamanprocessandACStarkeffectwereessentialafterdeeplystudyontheeffectonwide。bandcharacteristicunderdifferentoperatingparametersincludingworkinggaspre
7、ssure,pumpingenergyandbu仃‘ergaseta1.Furthermore.thereasonthatimpactingonmulti—Ramaninteractionwasdiscussedintensivelyandsystematically,andspectralcharacteristicsofSMMWLasersuchaswideband.multi,longitudinal.modewereexplainedwithmulti-Ramaninteraction.Theruleofexten
8、dingtheoutputspectraIran。geWaSdeducedaftersystematicalstudyonmechanismsandfactorsthataffectedtheOUtputspectralcharacteristieofwidebandandfinestrueture。Finally,theexperimentsystemofminiaturesubmillimeterwavelaserwasintroduced.andtheexperimentalresultswereingoodagre
9、edwiththeoreticalresults.TheresultscoulddofavortothemanufactureofwiderangetunableminiaturepulsedopticallypumpedSMMW(submillimeterwave)IaseLandalsohadsom
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