200 mJ半导体端面泵浦MOPA激光器研究
|
摘要
采用高功率激光二极管阵列(LDA)端面泵浦Nd:YAG激光棒方式,结合凸凹非稳腔的设计,获得20 Hz运转条件下小束散角激光输出平均能量约为83 mJ。以该激光为振荡源,同样采用LDA端面泵浦Nd:YAG激光棒的方式进行能量放大,组成LDA端面泵浦振荡-放大(MOPA)激光器,最终获得重频频率20 Hz、平均能量>200 mJ、发散角<2.1 mrad、能量波动<±2.5%的脉冲激光输出。该激光器光光转换效率约为14.6%,体积为175×91×49 mm~3,质量<1 kg,激光经8倍发射天线后发散角<0.3 mrad。
Using the high-power laser diode array(LDA) end-pumped Nd:YAG laser bar method, combined with the design of the convex-concave unstable cavity, the average energy of the small beam divergence laser output was achieved about 83 mJ under 20 Hz operating conditions. Then taking the laser as the oscillation source, the same method of the LDA end-pumped Nd:YAG laser rod was used for energy amplification to form an LDA end-pumped master oscillator-power amplification(MOPA) laser, which finally obtained the pulsed laser output with a repetitive frequency of 20 Hz, an average energy of >200 mJ,a divergence angle <2.1 mrad and an energy fluctuation <±2.5%. The laser has a optical-to-optical conversion efficiency of about 14.6%, a volume of 175×91×49 mm~3, a mass of <1 kg, and a divergence angle of <0.3 mrad after transmitted through an 8~× transmission antenna.
Using the high-power laser diode array(LDA) end-pumped Nd:YAG laser bar method, combined with the design of the convex-concave unstable cavity, the average energy of the small beam divergence laser output was achieved about 83 mJ under 20 Hz operating conditions. Then taking the laser as the oscillation source, the same method of the LDA end-pumped Nd:YAG laser rod was used for energy amplification to form an LDA end-pumped master oscillator-power amplification(MOPA) laser, which finally obtained the pulsed laser output with a repetitive frequency of 20 Hz, an average energy of >200 mJ,a divergence angle <2.1 mrad and an energy fluctuation <±2.5%. The laser has a optical-to-optical conversion efficiency of about 14.6%, a volume of 175×91×49 mm~3, a mass of <1 kg, and a divergence angle of <0.3 mrad after transmitted through an 8~× transmission antenna.
引文
[1] KOECHNER W.Solid-state laser engineering[M].Translated by SUN Wen.Beijing:Science Press,2002:164-165;273-291;410-414.W.克惜耐尔.固体激光工程[M].孙文,译.北京:科学出版社,2002:164-165;273-291;410-414.
[2] DU Xiulan,WU Feng.Comparation of lamp-pumped solid-state lasers and diode-pumped solid-state lasers[J].Journal of Applied Optics,2004,25(3):37-40.杜秀兰,吴峰.固体激光器的灯泵浦和二极管泵浦方式比较[J].应用光学,2004,25(3):37-40.
[3] HAN Yaofeng,ZHANG Ruofan,LIU Guorong,et al.Optimization of pump structure parameters in LDA side-pumped solid state laser[J].Journal of Applied Optics,2014,35(5):895-901.韩耀锋,张若凡,刘国荣,等.LDA侧面泵浦固体激光器泵浦结构参数优化[J].应用光学,2014,35(5):895-901.
[4] MCCARTHY J C,YOUNG Y E,DAY R C,et al.Athermal,lightweight,diode-pumped,1 micron transmitter[J].SPIE:Solid State Lasers XIV,2005,5707:237-240.
[5] WANG Kuangbiao.Present situation,key technology and development of laser-guided weapon[J].Infrared and Laser Engineering,2007,36(5):651-655.王狂飙.激光制导武器的现状、关键技术与发展[J].红外与激光工程,2007,36(5):651-655.
[6] CREPY B,CLOSSE G,CRUZ J D,et al.Athermal diode-pumped laser designator modules for targeting application[J].SPIE,2012,8541:85410R-1-7.
[7] SIJIAN A.Development of highly compact and low power consumption athermal military laser designators[J].SPIE,2012,8541:85410U-1-12.
[8] GOLDBERG L,NETTLETON J,SCHILLING B,et al.Compact laser sources for laser designation,ranging and active imaging[J].SPIE,2007,6552:65520G-1-8.
[9] YAO Aiyun,HOU Wei,LI Huiqing,et al.Reducing thermal effect in end-pumped laser crystal by using a novel resonator[J].Chin.Phys.Lett.,2005,22(3):607-610.
[10] SCHILLING B W,CHINN S R,HAYS A D,et al.End-pumped 1.5 μm monoblock laser for broad temperature operation[J].Applied Opticts,2006,45(25):6607-6615.
[11] WEN Wuqi,FU Rulian,SUN Jiantang,et al,Active Q-switched Nd:YAG lasers end-pumped by QCW-LD[J].2002,13(10):994-996.温午麒,傅汝廉,孙建堂,等,LDA端泵电光调Q Nd:YAG激光器[J].光电子·激光,2002,13(10):994-996.
[12] SHI Zhaohui,ZHANG Jing,NIU Gang,et al.High repetation rate AO Q-switching of double end-pumped Nd:YVO4 all-solid-statelaser[J].Laser & Infrared,2006,36(8):635-638.石朝辉,张晶,牛岗,等.高重频双端泵浦全固态Nd:YVO4声光调Q激光器[J].激光与红外,2006,36(8):635-638.
[13] HUANG Ke,FAN Zhongwei,YU Jin,et al.Theoretical and experimental study of LD end-pumped Nd:YVO4 laser amplifier[J].Laser & Infrared,2011,41(8):861-866.黄科,樊仲维,于锦,等.LD端面泵浦Nd:YVO4激光放大器的理论及实验[J].激光与红外,2011,41(8):861-866.
[14] SEKINE T,MATSUOKA S I,YASUHARA R,et al.84 dB amplification ,0.46J in a 10Hz output diode-pumped Nd:YLF ring amplifier with phase-conjugated wavefront corrector[J].Optics Express,2010,18(3):13927-13934.
[15] SHUICHI F,KEISUKE F,KOJI Y.28% electrical-efficiency operation of a diode-side-pumped Nd:YAG rod laser[J].Optics Letters,2001,26(9):602-604.
[2] DU Xiulan,WU Feng.Comparation of lamp-pumped solid-state lasers and diode-pumped solid-state lasers[J].Journal of Applied Optics,2004,25(3):37-40.杜秀兰,吴峰.固体激光器的灯泵浦和二极管泵浦方式比较[J].应用光学,2004,25(3):37-40.
[3] HAN Yaofeng,ZHANG Ruofan,LIU Guorong,et al.Optimization of pump structure parameters in LDA side-pumped solid state laser[J].Journal of Applied Optics,2014,35(5):895-901.韩耀锋,张若凡,刘国荣,等.LDA侧面泵浦固体激光器泵浦结构参数优化[J].应用光学,2014,35(5):895-901.
[4] MCCARTHY J C,YOUNG Y E,DAY R C,et al.Athermal,lightweight,diode-pumped,1 micron transmitter[J].SPIE:Solid State Lasers XIV,2005,5707:237-240.
[5] WANG Kuangbiao.Present situation,key technology and development of laser-guided weapon[J].Infrared and Laser Engineering,2007,36(5):651-655.王狂飙.激光制导武器的现状、关键技术与发展[J].红外与激光工程,2007,36(5):651-655.
[6] CREPY B,CLOSSE G,CRUZ J D,et al.Athermal diode-pumped laser designator modules for targeting application[J].SPIE,2012,8541:85410R-1-7.
[7] SIJIAN A.Development of highly compact and low power consumption athermal military laser designators[J].SPIE,2012,8541:85410U-1-12.
[8] GOLDBERG L,NETTLETON J,SCHILLING B,et al.Compact laser sources for laser designation,ranging and active imaging[J].SPIE,2007,6552:65520G-1-8.
[9] YAO Aiyun,HOU Wei,LI Huiqing,et al.Reducing thermal effect in end-pumped laser crystal by using a novel resonator[J].Chin.Phys.Lett.,2005,22(3):607-610.
[10] SCHILLING B W,CHINN S R,HAYS A D,et al.End-pumped 1.5 μm monoblock laser for broad temperature operation[J].Applied Opticts,2006,45(25):6607-6615.
[11] WEN Wuqi,FU Rulian,SUN Jiantang,et al,Active Q-switched Nd:YAG lasers end-pumped by QCW-LD[J].2002,13(10):994-996.温午麒,傅汝廉,孙建堂,等,LDA端泵电光调Q Nd:YAG激光器[J].光电子·激光,2002,13(10):994-996.
[12] SHI Zhaohui,ZHANG Jing,NIU Gang,et al.High repetation rate AO Q-switching of double end-pumped Nd:YVO4 all-solid-statelaser[J].Laser & Infrared,2006,36(8):635-638.石朝辉,张晶,牛岗,等.高重频双端泵浦全固态Nd:YVO4声光调Q激光器[J].激光与红外,2006,36(8):635-638.
[13] HUANG Ke,FAN Zhongwei,YU Jin,et al.Theoretical and experimental study of LD end-pumped Nd:YVO4 laser amplifier[J].Laser & Infrared,2011,41(8):861-866.黄科,樊仲维,于锦,等.LD端面泵浦Nd:YVO4激光放大器的理论及实验[J].激光与红外,2011,41(8):861-866.
[14] SEKINE T,MATSUOKA S I,YASUHARA R,et al.84 dB amplification ,0.46J in a 10Hz output diode-pumped Nd:YLF ring amplifier with phase-conjugated wavefront corrector[J].Optics Express,2010,18(3):13927-13934.
[15] SHUICHI F,KEISUKE F,KOJI Y.28% electrical-efficiency operation of a diode-side-pumped Nd:YAG rod laser[J].Optics Letters,2001,26(9):602-604.