1064nm泵浦掺氧化镁周期极化铌酸锂晶体(PPMgLN)光学参量产生器的研究

1064nm泵浦掺氧化镁周期极化铌酸锂晶体(PPMgLN)光学参量产生器的研究 1064nm泵浦掺氧化镁周期极化铌酸锂晶体 (PPMgLN)光学参量产生器的研究 1064nm???????f?Q?%???T???Q?????0????(PPMgLN) ?X?????????T?????7?? ?1????1 ,?????? 2 ,??S??X 1 1.?????f???????1???X?,?X?H???????O??????????,????????450052; 2.?u?c?f???????????,?X?H?????L???????X?,?X?H???7???R,???????X?H???????O??????????????,?u?c300072 ????:?l???u?p???????????????X?6QNd:YAG???X????????1064nm?????????X?U??????,?u?p???f?Q?%???T???Q?????0????(PPMgLN) ?U???????p,???????u???6?.???????z???????X??????S0?????????X?????q??,?6?.?6????S0???????u????40e6?S180e6???Q??,?????????X ???????6?.?6???U1.567-1.6736?m,???????????X???6?.?6???U2.923-3.3156?mS0??????1064nm???/?????U1.017W??,?????????X?????U 185mW,???????????X?????U106mW,?v?????U291mWS0 ???I??:???????z??;???f?Q?%???T???Q?????0????(PPMgLN);?u???6?. ?D???m????:TN248.1S?S?S?S????I?(???1:AS?S?S?S??????Q??:0253-2743(2006)05-0017-03 Theresearchof1064nmpumpedPPMgLNopticalparametricgeneration DIAOShu-yan1 ,YAOJiao-quan2 ,ZHENGYi1 1.HenanKeyLaboratoryofLaserandOpto-electronicsInformationTechnology,Zhengzho uUniversity,Zhengzhou,Henan450052,China; 2.OptoelectronicsInformationScienceandTechnologyLab.,InstituteofLasersandOptoelectronics,Collegeof PrecisionInstrumentandOptoelectronicsEngineering,TianjinUniversity,Tianjin300072,China Abstract:Wereportatemperaturetunedall-solid-stateopticalparametricgeneratorwithMgO-dopedperiodicallypoledlithiumniobate(PPMgLN) pumpedbya1064nmacousto-opticallyQ-switcheddiode-end-pumpedNd.-YAGlaser.Abroadsignalspectrumfrom1.567through1.673micronswas obtainedbychangingthetemperatureofthecrystalfrom40e6to180e6,andthecorrespondingidlerwavelengthsfrom2.923through3.315microns.Theexperi2 mentalresultswereconsistentwiththeoreticalpredictions.Thetotaloutputpowerofthesingle-passPPMgLN-OPGwas291mW,whichincludes185mWof 1.6736?msignalradiationand106mWof2.9236?midlerradiation,underanaveragefundamentalpowerof1.017W. Keywords:quasi-phase-matching;PPMgLN;temperature-tuned ?E?x???T65 ???n?????1????(65),??,???-?1?????0??,??????,?????f?? ?p??????,?????????1???X???O???????f?X?????????????7??S0 S?S??X???????T???y?????M?????????E,????????,???3?6 ???????E?????X?????X?Y?????f?????O?Y?????????Q???? ?7???????p S71-3S: S0??MgO???T???Q?????0(PPMgLN)?????? ?)?????T???Q?????0(PPLN)?????????X???????a?P?C???? ?U??,?????p?b?u?L???T?????X?????? S74S: S0?l???u?p?????? 1064nm?X?????4??MgO???T???Q?????0????,?G???????u ???6?.(20e6??180e6),???????6?.?6???U1.567??1.6736?m ???????X,?????6???U3.315??2.9236?m???????X????S0 1S??m???m?? ?b?????p?????????z??(QPM)?????T???Q?????MPPLNS1 PPLTS1PPKTPS1PPRTA?X S75-8S: S0????,???b???????????????z???X ?????????T??(QPMh7OPG)?????U?m???????H?????U?????0 (LiNbO3)????,???????G?X?6????,???5?n?i??0.4??4.56?m?U ??,????????S1?D???Q?U??,?????f?????fS0?V?O?y??LiNbO3 ?????????X???a?P?C??,?3???T?X???a,?????B?????T,???? ?p???u?L??????????????,???????????p???S???ES0???? ??,?????D?5?????p??MgO(5mol%)?????T???Q?????0???? (PPMgLN),?????????X???a????,?????a?P?C??PPLN???? ??100?)S0?5???u?p??????????Nd:YAG(1064m)???X???? ?U???y??,?u?pPPMgLN???U?????f????,?7?E???X???????? ?T??(OPG)S0OPG?O???????6?.???????X?X??,?m???t?U?? ?????X??(?????X)???4???T???Q????,?????????????d??, ?????T?????X???????X??????????,?N?7?G???6?????Q???? ???u??,?????p???t???????????6?????????6?.????,?O?? ?6?.???X???T??????????????S0??????????,?6?.?6???f (?????Q?S?i?Q,?n???????X),????????,?????B????,???? ???????2???Q?,?????Q,???M???X?y???????????????????? ???q???f???Y??S0 ?????X?????T?????????????z??????S0???????z?? (QPM)?O?G?????T?f???z???????f?????????E?????f???Q ?????5,?????????X???T???L?D?y?????4???????h?.?????? ?X?,?????X???????????y??S0???Y???O???????U???z???? ???????4?????????????T,???K?????M?????????f???????f ????,?m???g???T?u?p?????????t?2?X?6??,???????????? ???B??,?????f?????B????,?6?.???2????S1?G?KS0 ????QPM???????????????????????????????? 1 6?p = 1 6?s + 1 6?i 6?kQ= n(6?p,T) 6?p - n(6?s,T) 6?s - n(6?i,T) 6?i - m 6?(T) =0 (1) ???D6?pS16?s??6?i?m?i?U?????XS1?????X???????X???? ??;m?U???????z???E??;6?(T)?O?u???UT???????????Q ???T:n(6?p,T)S1n(6?s,T)??n(6?i,T)?O?u???UT?????????? ???XS1?????X???????X?????4??S0 ?????2(1)?L??,?????????X???6?.????,???G???G???6 ?.???2:?????????6?.,???Q???T?6?.,?u???6?.,?Q???H?? ?6?.?XS0?u???6?.?O???????z???X?????????T??(QPM OPG)?????????b?????6?.???2,???Y???O?????p???f?????? ?6?????????6?.,?U???O?6?.???T??????S0???6?.???????? 1?R?U(????sellmeierequationsRef.9) ??1S?1064nm?????LPPMgLN-OPG???u???6?.???? (PPMgLN?????????Q???T?U30.76?m) 2S??u???6?.PPMgLN?X?????????T???????? ?7?? 2.1S??X?????????T?????????????????,?????7?? ??S??X?????????T?????????????????U?2?? F88?o?P????;Q???XQ????M6?????? MLNOG?????????U88LD?????????X?6Q NYG?????1?????????X??,???U?????????U?2??S0LD 71S?S?Sg???X?=??SL2006???l27???l5?TS?S?S?S?LASERJOURNAL(Vol.27.No.5.2 006) :200-04-0 :19- 2 1:0nm::1:104nm PPg-P0nm d:A2 Coherent?????T????FAP-System4200???<???????X ??,?????f?????????U11.8W,?D??????808nm,?X???????U 8006?m,???C?????U0.22S0Nd:YAG?????U???U6?4??9mm,?? ?=?????U1%,???????R808nm???2S11064nm??????,?????? ?R808nmS11064nm???2??,?U?????5?????????B??,?????D?? ???u???????U17.5e6S0?.?O?????p??????????-????????S0 ?y???X???????T?????P?C????,???????????????C????,?5 ???p?.?O???D?????????XQ????(???????G???H?????%???R ?T????QSGSU-10/Q??),???)????1-50KHz???6,?????? ??????1064nm????S0 ??3S????????????????,?<???????X???????H?%?????? ?<???????X???????H?%?U20A??,LD?????????U10. 5W,?G???o?P????F1?,,?????L???S9.3W,????????1064nm ?X?????U4.12W,????3?R?US0??????????1064nm?X???/?? ???U2.37WS0?X???X?????B?????S44%,?????X???f?2???U 5606?mS0 ?????D,?????P?m???o?P????F1,?6???o?P?????,YAG ???????????O??????????S0???G???o?P???????????X?M?? ?2???X???????????o??,?????o?X???f???j?pNd:YAG???? ?????g,?7?p???????p???M???t????????,???5???6?o?P?? ??F1?,YAG??????????,?????????????f;?????X???,?O?? ?X?N??,???K???????S?????X???p??S0 3.2S?OPG???????7?? ??4S?OPG???????U?2?? ???T???Q????PPMgLN?????Q???T?U30.76?m(???u),z ?????5???Q,?U???U50mm??5mm??1mm,?U???2???????d,?? ???a?????R?????XS1?????X???????X?????2??S0?u???????? ?6???U???u-200e6,???b???????????u????????-10e6?? 55e6,?u?????E?????U??0.1e6S0?????D?6???S?????????? 1mm,?p1064nm???????,?u?p?????t?o?P?2??,?m1064nm?? ???X??????S1???o?SPPMgLN?????DS0?z?????o????,?????X ???????o,???o?P?2???,?G??50mm????PPMgLN???????< ???U2006?m,???N?????????S?R?????o?P?2?????o???f???U 50mmS0?????D,?o?P?????6?????w?????b????,?????o?S PPMgLN?g???X???)???t?f???)???t?2S0?o???p?????????? ????????,?V???3??????????,????????????????,???????? ???)???????O??????????S0?5???6???o?P??F2?,1064nm ????????????,?o?P??F2?,?u??????????,?????????????X ?????????4,???S?L?S?M???X???T,?????X???U?????X,???? ???6??,???S?L?S???X???????X?????j???????f,???6???S ????????S0 S??????????????? ?????T???Q???????u???Ue6,???XQ?????)?????U 10KHz,???4?????????/?????U1.017W??,?????????X???? ?U185mWS0??5?U??PPMgLN???u???U140e6??,?????????? ?????????X???????,??????????????????S0?????????)??, ?5???????????????????X???????,?u?????Q??????????,?? ??6?R?US0?y??6?L??,???R?u?????/??,?????????????? ?X(?????X)?????,?m???C???v?PS0 ??LD?????H?%?U17A??,???XQ?????)?????U10KHz, ?z?????T???Q???????u??,?p??????(LP-3P??)?????????? ???X??????,?p?X?y??(Aglient??86142B???X???X?y??)???? ?????????X???X?y,???X?y???????X?y???????6???U1400?? 1700nmS0??7?U?R??1623nm?????X???X?y??S0 ??5S?OPG?????????X?????,?????????????? ??6S?PPMgLN-OPG?????X???????u?????Q?m???????,?????C ??7S?1623nm?????X???X?y?? ?????)?????U10KHz,LD?????H?%?U14A??,?5?????? ???p?)?N?u???LOPG???????v????,?n???????XS1?????XS1?? ???X???t???d??1064nm?????XS0 ??1S?OPG???????v???? ?u??(e6)406080100120140160180 ?v????(W)0.7480.7400.7500.7590.7770.7800.7770.767 ?y??1?D?????L??,???R?u???/???v???????l???1?) ??,???,???R?u?????/??,?????????B??S1???D?????d?????l ???1?)??S0 ?z???????O?????m,OG?D?.???,???????????o?P,?? ?T???M??????????????????????????;?y???????X???T?U, ???,???????????X?o?P,???T??????(63??65???X); 81S?S?Sg???X?=??SL2006???l27???l5?TS?S?S?S?LASERJOURNAL(Vol.27.No.5.2 006) 4 100 P 2nm4nm (532nm???X)S1???????????e?. ??(780nm??850nm)S1???????????e?.???,???????????? 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