铯原子d2线光抽运光谱与其应用-研究

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1、万方数据Il万方数据ABSTRACTCesium，rubidiumorotheralkalimetalatomswithsimpleenergylevelstructureoftenareusedinexperimentstostudytheinteractionbetweenlightandatoms．Opticalpumpingspectrumcanbeobtainedbydetectingtheabsorptionoftheprobebeamwithconstantfrequencyundertheeffectsofthepumpingbeamwithcontinuoustunin

2、gintheCsvaporcell．Itissignificanttounderstandtheatomiccoherencebystudyingtheopticalpumpingspectrum．WechosetoanalysisopticalpumpingspectrumofcesiumD2lineandproposedapproachesofoffsetlockingbetweentwodiodelasersbasedonthestandardofatomichyperfinetransitionusingthisspectrum．Themainworksarestatedasfo

3、llows：Thefirstpartintroducesthebasiccharacteristicsofthesemiconductorlaserandanalysisestheimpactofvariousfactorsonthefrequencyofsemiconductorlaser．Thenweintroducetheproductionprocessofgratingfeedbackdiodelaser．Finally,weintroducethefrequencystabilizationmethodusingsaturatedabsorptionspectrumandit

4、smainideaistorealizethelaserfrequencylockingbasedonthespecificatomictransitionlinesasthefrequencyreferencetoobtainthefrequencydetectionsignalwithaelectronicsnegativefeedbackloop．Thesecondpartintroducestheopticalpumpingspectrums．Oneofthetwofixed-frequencylasersisusedasthesourceoftheprobebeamwithco

5、nstantfrequencyandtheotheroneisusedasthesourceofthecontrollingbeamwithcontinuoustuning．WiththeabsorptionofafrequencyidentifiedandCO—propagationalprobebeam，theopticalpumpingspectrumsaredemonstrated．Thespectrumsmainlyreflectnotonlythepumpingeffectoftheinteractionberweentwolightsandatomswhen，butalso

6、maybequantumcoherenceeffectbetweenthetwolightsandtheatom．Atlast，wegottheopticalpumpingspectrumswhenthecontrollingbeamandprobebeamgothroughtheCsvaporcellinoppositeorthesamedirectionsandthenweanalysisedthemeaningofthepeaksintheopticalpumpingspectrumsunder万方数据differentconditions．Thethirdpartfocuseso

7、ntheapplicationoftheopticalpumpingoftheD2lineofcesiumatomsintherealizationofthetechniquesofoffsetlockingbetweentwodiodelasersandanalysises．Andthenweintroducetheexperimentalapparatusandexperimentalprocedureofoffsetlocki