摻鉺YAG調(diào)Q激光系統(tǒng)研究.pdf

1、合肥工業(yè)大學(xué)碩士學(xué)位論文摻鉺YAG調(diào)Q激光系統(tǒng)研究姓名：馬明俊申請(qǐng)學(xué)位級(jí)別：碩士專(zhuān)業(yè)：光學(xué)工程指導(dǎo)教師：葉兵20100401ResearchofElectro—opticallyQ—switchedEr：YAGLaserAbstractWiththeextensiveapplicationof294prolaserinmedicine，higherrequirementtothelaserpulseisproposedtomoresec

2、uritymedicaloperationComparingwithfree。runningregime，Q。switchedEr：YAGlaseristheeffectivemethodofobtainingnarrowerpulseUptonowalthoughsomeattentionhasbeenpaidtoQswitchedEr：YAGbyabroadscholar，noliteraturereportisathomeInth

3、isdissertation，thedesignofQ—switchedEr：YAGlaserisproposedonthebasisofthecomprehensiveresearchFromthetheoryofenergylevel，theanalyticexpressionofthephotonfluxdensityinsidetheIaSerresonatorhasbeenobtainedbyanalysingtheratee

4、quationsofEr：YAGlasercrystalDependingontheQ—switcheddynamics，wemayobtalnpeakpowerandtherelationshipbetweenpulsewidthandpopulationinversionFurthermore，theoreticalanalysisandnumericalcomputationwerepresented，whichareaboutt

5、heoutputcharacteristicsoflaserenergyextractionefficiencyandthebestmirrorreflectivityThen，thennallensformulahasbeengottenbyanalyzingthethermallenseffectoflaserrodTheprogram，whichisaboutQswitchedEr：YAGlaser，madeadetailedan

6、alysisandspecificdesigntothedischargeparametersofpumppowertheselectionofQ。switchedcrystal，crystalstructure，laserresonatorgeometryandthecompensationtothermallenseffectinsidethelaserresonatorAccordingtotheprogram，pulsesof1

7、03～110nsdurationand87mJenergyhavebeenobtainedAfree—runningandQ—switchedpulsedlaserwasusedforthecavitypreparationexperimentsofthedentinerespectivelyUsingscanningelectronmicroscopythesamplesshowedthatQ—switchedlaserisbette