晶體非線性光學(xué)系數(shù)測量平臺中的數(shù)據(jù)采集與處理.pdf

1、山東大學(xué)碩士學(xué)位論文晶體非線性光學(xué)系數(shù)測量平臺中的數(shù)據(jù)采集與處理姓名：王祿申請學(xué)位級別：碩士專業(yè)：材料學(xué)指導(dǎo)教師：張少軍20090301山東大學(xué)硬士學(xué)位論文DataAcquiSitionandProcessinginSecond—OrderOpticaINonInearCoefficientMeasuringPIatformAbstractSecondOrderopticalnonlinearcoefficientsaretheimpo

2、rtantparameterforopticalnonlinearcrystalSSecond一0rderopticalnonlinearcoefficientsaremeasuredusingMakerfringers，ifcrystalscan’tachievephasematch，orsomecoefficientsarenotincludedinphasematchThiSthesiSchieflyresearchedandre

3、alizeddataacquisitionanddataprocessinginthemeasurementofSecond—OrderopticalnonlinearcoefficientUSingMakerfringersTheexperimentalplatformofSecond—OrderopticalnonlinearcoefficientsmeasuringusingMakerfringersconsistsoflaser

4、，rotatingplatform，detector，gatedintegrators，etcTherequisitesynchronizationoflaser，detector，sample，androtatingplatformisSigidthatmanualoperationcan’tbeachievedPhotoelectricsignalSthatareacquiredbyMakerfringersareweakones，

5、theyaresusceptibleofdisturbancesThemoredatawegather，theexacterresultswe’11getSoweneedtogatherasmanyasdataTheMakerfringerstechniqueweusediSarelativemeasurement，itneedhighrepetitionBasedonthefeaturesofourdatagathering，wemu

6、stcombinetheautomatedinstrumentsandcomputertechnologytoaccomplishourtasksofdatagatheringwel1Westudieda11sortsofinstrumentsports，anddesignedspecificallythesoftwarePortMastertocontroldatagatheringItmakesdatagatheringautoma

7、table，andenhancestheaccuracyofgatheringresultsandtheefficiencyofexperimentsgreatlyThecrucialquestioninMakerfringersexperimentiShowtogatherthegeneratedsecond—。harmonicpowerofcrystalsamplesindifferentrotatinganglesTheangle

8、sarecontrolledbyrotatingplatformaccuratelyThesecond—harmonicpoweriSdetectedbydetectorsandintegratedbyGatedIntegrators，theniSaveragedandexportedThewholeprocessiscontrolledbycomputerviaPortMasterThiSthesiSdetailedlydepicte

9、dthesequencecontrolinexperimentandhowtoimprovetheaccuracyofexperimentaldata，etcHundredsofdataarecollectedineachexperiment，anditiSconvenienttomanagedatabycomputersoftwareAtpresent，specificsoftwaretoprocessMakerfringersare

10、few，andthefunctionofthemiSnotperfectSuchas，someareonlysuitableformedialandhighsymmetrycrystals，butarenotforlowsymmetrycrystalsWespecificallydesigneddataprocessingsoftwareMakerDP，basedonthetheoryformuiasofMakerfringersand