Cr-4-YAG被动调Q4倍频全固态紫外激光器的研究

:1001-3806(2003)04-0339-03Cr4+BYAGQ4*周城叶子青郑权薛庆华钱龙生(,,250022)(,,130022):LDCr4+BYAGQNdBYAG100mm,1064nm9mmKTP2,29mW532nm30mm,4mmBBO4,7.3W,1.1mW,12.5kHz,12ns266nm,-3.8%,-0.7%:;4;;Cr4+BYAG:TN24811:AInvestigationforpassivelyQ-switchedCr4+BYAGal-lsolid-stateultravioletlaseroffourth-harmonicgenerationZhouCheng1,YeZiqing2,ZhengQuan2,XueQinghua2,QianLongsheng2(1SchoolofScience,JinanUniversity,Jinan,250022)(2ChangchunInstituteofOpticsandFineMechanics,TheChineseAcademyofSciences,Changchun,130022)Abstract:PassivelyQ-switchedCr4+BYAG/NdBYAGal-lsolid-stateinfraredlaser,pumpedbyadiodelaser,wasdesigned.Thenwithalensof100mmfocallengthfocusingthe1064nmIRlasertoa9mmKTPsecond-harmonicgenerationcrystal,agreenlaserpulsewasobtainedwithaverageoutputpowerof29mW.Atlast,withalensof30mmfocallengthfocusingthe532nmgreenlasertoa4mmlengthofBBOfourth-harmonicgenerationcrystal,anultravioletlaserpulseat266nmwasobtainedwithpeakpowerof7.3W,averageoutputpowerof1.1mW,repetitionrateof12.5kHz,pulsedurationof12ns.Ratioofgreen-ultravioletpowerconversionis3.8%,andthatofinfrared-ultravioletpowerconversionis0.7%.Keywords:ultravioletlaser;fourthharmonicgeneration;al-lsolid-statelaser;Cr4+BYAG*:,,197411:2002-08-12;:2002-11-04,(Nd3+),NdBYAG,LDNdBYVO4,,,Q,Cr4+BYAGQ,,,,,NdBYAGQ[1],Cr4+BYAGQ266nm,3(100GBDVDCD),[2],,,,,,;[3],LD266nm,532nm266nm27420038LASERTECHNOLOGYVol.27,No.4August,2003BBO[4,5]CLBO[6][7]QNdBYVO4,KTP2,BBO4266nm,,,QNdBYVO4,LDNdBYAG,CrBYAGQ,1064nmQ,1064nmKTP2,532nmBBO4,266nmQNdBYVO4,,,266nm1Cr4+BYAGQNdBYAGQCr4+BYAG/NdBYAG11.3WLD,TEC1LD808.5nm,NdBYAG(SML)NdBYAGFig.1TheschematicofLD-pumpedNdBYAG/CrBYAGpassiveQ-switched1064nmlaser3mmNdBYAG808nmHT/1064nmHR,,1064nmHT1.4mmCr4+BYAGNdBYAG,87%Fig.2Waveformof1064nminfraredpassiveQ-switchedlaserpulse20ns/div50mm,15%10mm,TEC2LD1.3W,,750W,150mW16ns12.5kHz1064nm2,,Q,,,,/0,TEM00,,,[8]2KTP532nmQCr4+BYAG/NdBYAG,LD,KTP,,,Q,,,f80mm1064nm,9mmKTP,29mW,155W,15ns3BBO4266nm266nm,[9]:P2X=52.2L2deff2nX2n2XK2XcAPX2(1),L,deff,nX,n2X,K2X,c,A,PXPXW,(1),,,f2532nm,(TEM00),34020038BBO4266nm3,532nmf30mm4mmBBO,BBOÑFig.3Theschematicofoutercavityfourth-frequency266nmultravioletlaserpulseLD1.3W,1.1mW12ns7.3W266nm,,532nm266nm-3.8%,1064nm266nm-0.7%266nmFig.4Thewaveformofoutercavitydoubled266nmultravioletlaserpulse50ns/div441.3WLDNdBYAG,750W,16ns1064nmKTPBBO,7.3W1.1mW12ns266nm,,532nm266nm1064nm266nm-3.8%0.7%,,,LD[1]ShimonyY,BurshteinZ,KaliskyY.IEEEJQE,1995,QE31:1738.[2].,2002,15(2):31~32.[3]..:,2002:1.[4]KnittelJ,KungAH.IEEEJQE,1997,33(11):2021~2028.[5]KondoK,OkaM,WadaHetal.OptLett,1998,23(3):195~197.[6]KojimaT,KonnoS,FujikawaSetal.OptLett,2000,25(1):58~60.[7],,etal.,2000,49(10):2106~2108.[8],.,2001,31(6):338~340.[9]..:,1995:73~74.(上接第338页),xc=-x*;yc=-y*(11),Fig.4Squaregainedbylasermarkingwithcorrection4,42,:CO2,ScanlabScangine144D/A,2,,[1].,1998,28(1):45~47.341274Cr4+BYAGQ4