摻鐿8字形超短脈沖光纖激光器.pdf

1、中國科學(xué)院西安光學(xué)精密機(jī)械研究所碩士學(xué)位論文摻鐿8字形超短脈沖光纖激光器姓名：劉暢申請學(xué)位級別：碩士專業(yè)：光學(xué)指導(dǎo)教師：趙衛(wèi)20040719竺竺!墮一————AbstractAsanimportanttoolinphysics，chemistryandlifesciencestudies，theultrashortpulsedlasersourcesareontheedgingofopticaltechnologyBecauseofso

2、meofitsinheritedoutstandingpropertiescomparedtothecommonsolidstatedlaser，thefiberlasershavealreadybecomeaveryactiveresearchregionTheEr”dopedultrashortfiberlaserisalreadyverymatureandgoodqualityproductsareavailableonthema

3、rketnowAsanattractivegainmediummeYb”一dopedfiberhassomebetterpropertiescomparedtOtheEr3dopedfibersuchashighersaturablepowerhigheropticalconversionefficiencyandbroadergainspectrumbandwidthrcansupportpulsesasshortas30fs)Int

4、hispapertheYb”一dopedpassivelymode—lockedfiberlaserusingthenonlinearopticalloopmirrormOLM)formode—lockingisstudiedexperimentallyandtheoreticallyAtbeginning，itsdevelopmenthistorythenewestachievement，theclassification，theme

5、ritsandshortcomingsandalsotheapplicationofthemode—lockedfiberlaseriSsummarizedSecondly，thebasicmode—lockingprinciplesandtechnologyofthefiberlaserespeciallythefigurerofeightpassivelymodelockedfiberlaserareintroducedindeta

6、ilThedifferencesbetweenthepassivelymode—lockedfiberlasersworkinginpositivedispersion(Yb3doped)andnegativedispersion(Er3doped)isdiscussed，Thirdlythroughnumericalsimulationandexperimentsthepropertiesofnonlinearopticalloopm

7、irrorworkinginthepositivedispersionregionarestudiedandtheeffectofthelengthofNOLMonthepulsespectrumbandwidthisconcludedThedesignofthelasercavityisdiscussedThelasercavitieswithorwithoutdispersioncompensationallwereexperime