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1、646J.Opt.Soc.Am.B/Vol.8,No.3/March1991Eckardtetal.OpticalparametricoscillatorfrequencytuningandcontrolRobertC.Eckardt,C.D.Nabors,*WilliamJ.Kozlovsky,tandRobertL.ByerEdwardL.GinztonLaboratory,StanfordUniversity,Stanford,California94305-4085ReceivedMay15,1990;accep
2、tedAugust7,1990Thefrequency-tuningand-controlpropertiesofmonolithicdoublyresonantopticalparametricoscillatorsareanalyzedforstablesingle-modepumpradiation.Single-axial-modeoperationisobservedontheidlerandthesignalforbothpulsedandcontinuouspumping.Projectionsaremad
3、efortuning-parametertolerancesthatarerequiredformaintenanceofstablesingle-frequencyoscillation.Continuousfrequencytuningispossiblethroughthesimultaneousadjustmentoftwoorthreeparameters;thusthesynthesisofspecificfrequencieswithinthebroadtuningrangeofthedoublyreson
4、antopticalparametricoscillatorispermitted.1.INTRODUCTIONaxialmodes.Nevertheless,withimprovedpumpsourcesandnonlinear-opticalmaterialscoupledwithmultiple-Ananalysisofthefrequency-tuningpropertiesofdoublyparametercontrol,DRO'scaninprinciplebeoperatedresonantopticalp
5、arametricoscillators(DRO's),basedonstablyandtunedcontinuously,thuswideningtheirrangebothexperimentalobservationsandtheoreticalmodeling,ofapplications.ispresented.Specificdetailsinthispresentationoffre-DRO'scanprovidehighlycoherentoutput,reproduc-quencycontrolands
6、ynthesisapplytomonolithicDRO'singthestatisticalpropertiesofthepumpwithlittleaddi-constructedfromLiNbO3.Wherepossible,however,re-tionalnoise.ThiswasshowntheoreticallybyGrahamsultsaregivenwithmoregeneralapplicability.Thepur-andHaken9inaquantum-mechanicalanalysisoft
7、heposeisachievementofaquantitativeunderstandingofDRO,anditwasdemonstratedinexperimentalmeasure-theconditionsrequiredforstablesingle-axial-modepara-mentsofthecoherencepropertiesoftheDRO.Themetricoscillationandtheresultingfrequencystabilityquantum-mechanicalanalysi
8、sshowedthatthediffusionoftheDROoutput.Approachestofrequencysynthesisofthesumofthesignalandtheidlerwavephasesfollowsandcontinuousfrequencytuningthatarebasedonth
