飞秒激光加工的微谐振腔激光器

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1、飞秒激光加工的微谐振腔激光器//.paper.edu.cn-1-中国科技论文在线Femtosecondlaserprocessingofmicrocavitylasers#ZHANXuepeng,XUHuailiang,SUNHongbo**(StateKeyLaboratoryonIntegratedOptoelectronics,CollegeofElectronicScienceand5Engineering,JilinUniversity,Chagnchun130012)Foundations:ResearchFundfortheDoctoralProgramofHigherEduc

2、ationofChina(20130061110047),andtheOpenFundoftheStateKeyLaboratoryofHighFieldLaserPhysics(SIOM).Abstract:Wereportonfabricationsoffunctionalmicrocavitylasersinsoftmaterialssuchaspolymerandproteinbyfemtosecondlaserprocessing.High-quality(Q)microdiskswiththelaserdye(RhodamineB,RhB)actingasgainmediumar

3、efabricatedthatproducewhispering-gallery-mode(WGM)lasingoutput.Wealsoobtainunidirectionallasingoutputwithalowlasingthresholdina10deformedspiralmicrocavityatroomtemperature.Photonic-molecule(PM)microlasersarepreparedtoinvestigatetheinteractionandcouplingeffectsofdifferentcavities,anditisfoundthatthe

4、distancebetweenthetwodisksplaysanimportantroleinthelasingbehaviors.Single-modelasingisrealizedfromastackedPMmicrolaserthroughtheVerniereffect.Furthermoreweadoptthebiocompatiblematerials,RhB-dopedproteinsasthehostmaterialandfabricatea3DWGMmicrolaser,which15operateswellbothinairandaqueousenvironment.

5、ThesensingoftheproteinmicrolaserstotheNa2SO4concentrationisinvestigated.Ourresultsoffabricatinghigh-Qmicrolaserswithdifferentmaterialsrevealthepotentialapplicationsoffemtosecondlaserprocessingintheareasofintegratedoptoelectronicandultrahighsensitivebio-sensingdevices.Keywords:femtosecondlaserproces

6、sing;microcavitylaser;polymer;protein200IntroductionOpticalmicrocavitieswithsmallmodevolumeandhighquality(Q)factorshavebeenconsideredasthebasicbuildingblocksofintegratedoptoelectronicdevices,andmayfindboardapplicationsinopticalcommunications,photoniccircuitsandopticalsensors[1-6].Microcavities25las

7、ersbasedonwhispering-gallery-mode(WGM)typicallyrefertomicrodisks,microrings,microcylindersandmicrospherescavity[7-14],andgenerallypossesstheuniquelasingfeaturesincludingultrasmallmodevolumeandultrahighQfact