抽运光参数对玻璃中受激布里渊散射光能量提取效率的影响

©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.:025827025(2008)0120021206111222(1,410073;2,350002)K9(LSBS),1.064m,Q,,,;,;500mm300mmK9170mm;1Hz,90%,,;;,;;K9;;;;O437.2;TN248.1+3A:2007204206;:2007208220:863(2002AA824091):(1979),,,,E2mail:[e-mail]:(1942),,,,,E2mail:[e-mail]sticsofPumpLaseronStimulatedBrillouinScatteringEnergyReflectivityDengShaoyong1GuoShaofeng1LuQisheng1ChenSui2LinWenxiong2LinZongzhi21CollegeofOpto2ElectricScienceandTechnology,NationalUniversityofDefenseTechnology,Changsha,Hunan410073,China2FujianInstituteofResearchontheStructureofMatter,TheChineseAcademyofSciences,Fuzhou,Fujian350002,ChinaAbstractFusedsilicaandK9glasseswereusedforlongitudinalstimulatedBrillouinscattering(LSBS)insteadoftraditionalmediumofliquidsorgases.Asinglelongitudinalmode1.064mlaserwhichiselectro2opticalQ2modulationisusedaspumplaser.Influencesofpulseduration,powerandpulserepetitionofpumplaseronpulsecompressionofLSBSandenergyreflectivityofscatteringlightwereinvestigated.Itisconcludedthatshorterpulsedurationiswithhigherenergyreflectivityandhighpulserepetitiongetshigherenergyreflectivity.Atthesametime,energyreflectivityofscatteringin300mmK9glasslightishigherthanthatin170mmfusedsilica,whenthefocuslengthis500mm.Andhighenergyreflectivityabove90%couldbeobtainedin170mmfusedsilicalongand300mmK9glasswhenpumppulserepetitionis1Hz.LSBSofpumplaserwithmulti2longitudinalmodehadbeeninvestigatedintheexperimentsanditisprovedthattheopticalbreakdowncouldhappenatthesametimewithSBS.Keywordsnonlinearoptics;stimulatedBrillouinscattering;K9glass;fusedsilica;pulserepetition;energyreflectivity;multi2longitudinalmode©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.[1](SBS),,(LSBS)[24];(ICF)[5];[6],;,[7][8,9],(SBS2FOG)[10][11][12],,,,Belkov[13];Yoshida[14],300mm,580mJ,92%,,K9JGS21,,211064nmNdYAGQ1020ns,130mJ,15Hz,500mJ,69mm,1Fig.1OpticschematicdiagramforLSBS,,,,(P),(Farady)(F2R),/4,,,,[15,16](3.5%,1%),E,EP=E(1-),E1,ET=E1/(1-);ESBS=EP-ET,ESBS/EP[15,16],,,,/4,;/4,(Stokes)ThorlabsDet210siD400fcAsGaIn,1nsD400fcAsGaIn1.5GHz,;Teck1.5GHzTDS71542(F2P)(312)MitronMTV21881EXCCD150mm2235©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.[17]3,1Hz88V,860V,18ns500mm;480mm400mm,,,[16],(23)mJ,,,35,,340mJ2,;,,,98V,957V,480mJ,12ns2(a)170mm;2(b)300mmK912ns18ns,,,,,,,,:5Hz1Hz88V,850860V,18ns,500mm170mm300mmK9,480mm400mm2(a),170mm;(b)K9,300mmFig.2Influencesofpumpenergyonenergyreflectivity(a)fusedsilica,170mm;(b)K9glasses,300mm35HzFig.3Influencesofpumpenergyonenergyreflectivityforpulserepetitionof5Hz5Hz,3321Hz,,,321:©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.()[17],170mm300mmK9,80%,500mm,300mmK9,,,1Hz,170mm300mmK990%10Hz,[17],,Yoshida[14],10Hz,540mJ,170mm300mmK992%K9,,;,,,,[18],K9:1);,;2);,;3);,5Hz,12ns500mm(540560mm),44(a)(b)Fig.4Characteristicsofpumplaserbeam(a)andinterferencestripes(b)5Fig.5Longitudinalmultimodepulsesofscattinglightandtransmissionlight5(a)(c),5(a)4235©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(b),(c)5(a):170mm,,463mm,140mJ;5(b):100mm,513mm,70mJ;5(c):100mmK9,513mm,70mJ,,,,,;,,100mm,513mm,100mJ5(d),,,5(e),,5(d),,,,;,,5(e),,,,,,100mmK9,513mm,120mJ5(f),,5(g),,,,,(5(g)(e)),,(5(h),(i))170mm,170mJ,,5(h)(i),,,5(g),,41),,;2),,,;3),,,:,,;4),K9,;5)1DavidT.Hon.PulsecompressionbystimulatedBrillouinscattering[J].Opt.Lett.,1980,5(12):5165182C.BrentDane,WilliamA.Neuman,LloydA.Hackel.High2energySBSpulsecompression[J].IEEEJ.QuantumElectron.,1994,30(8):190719153StephanSchiemann,WimUbachs,WimHogervorst.EfficienttemporalcompressionofcoherentnanosecondpulsesinacompactSBSgenerator2amplifiersetup[J].IEEEJ.QuantumElectron.,1997,33(30):3583664V.Babin,A.Mocofanescu,V.I.Vladetal..Analyticaltreatmentoflaser2pulsecompressioninstimulatedBrillouin521:©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.[J].J.Opt.Soc.Am.B,1999,16(1):1551635ZhangHua,FanDianyuan.ApplicationofstimulatedBrillouinscatteringtoICFlaserdrivers[J].LaserJournal,2000,21(2):79,.ICF[J].,2000,21(2):796NormanA.Kurnit,ScottJ.Thomas.Applicationofaphase2conjugationBrillouinmirrortogenerationofhigh2qualityvariable2durationKrFpulses[J].IEEEJ.QuantumElectron.,1989,25(3):4214297ChenJun,ZhouTao,ZhuQi.NumericalanalysisoftemporalstimulatedBrillouinscatteringinopticalfiber[J].HighPowerLaserandParticleBeams,2002,14(1):6569,,.SBS[J].,2002,14(1):65698BryanJ.Choi.InvestigationofLaserBeamCombiningandClean2UpviaSeededStimulatedBrillouinScatteringinMultimodeOpticalFibers[D].AirForceInstituteofTechnology,Ohio,20009TimothyH.Russell,WonB.Roh,JohnR.Marciante.IncoherentbeamcombingusingstimulatedBrillouinscatteringinmultimodefibers[J].Opt.Express,2001,8(2):24625410YanFengping,ShanYing,JianShu