700 mJ紧凑型激光二极管抽运Nd:YAG主振荡功率放大系统
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摘要
报道了一种紧凑型激光二极管(LD)侧面抽运的高能量全固态Nd:YAG主振荡功率放大系统。放大系统整体采用半导体制冷器进行冷却,实现了激光系统的紧凑化和小型化。主振荡器使用了直径为7 mm、长度为100mm、掺杂浓度(原子数分数)为1.1%的Nd:YAG晶体棒,在10 Hz重复频率下获得最大脉冲能量为350mJ、脉宽为9.7ns的激光输出。功率放大级使用直径为7.5mm、长度为134mm、掺杂浓度为1.1%的Nd:YAG晶体棒作为增益介质,放大后得到了能量为700mJ、脉宽为10ns的激光输出。
A compact high-energy solid-state Nd:YAG master-oscillator power amplification system side-pumped by laser diode is presented.We use the thermoelectric cooler in the whole system,and a compact and miniaturized laser system is achieved.A Nd:YAG crystal rod with diameter of 7 mm,length of 100 mm and doping concentration(atomic number fraction)of 1.1% is used in the master oscillator.We obtain a laser pulse with maximum pulse energy of 350 mJ,pulse width of 9.7 ns under repetition rate of 10 Hz.A Nd:YAG crystal rod with diameter of7.5 mm,length of 134 mm and doping concentration of 1.1%is used as gain medium in power amplification stage.Finally,we obtain the laser pulse with energy of 700 mJ and pulse width of 10 ns.
A compact high-energy solid-state Nd:YAG master-oscillator power amplification system side-pumped by laser diode is presented.We use the thermoelectric cooler in the whole system,and a compact and miniaturized laser system is achieved.A Nd:YAG crystal rod with diameter of 7 mm,length of 100 mm and doping concentration(atomic number fraction)of 1.1% is used in the master oscillator.We obtain a laser pulse with maximum pulse energy of 350 mJ,pulse width of 9.7 ns under repetition rate of 10 Hz.A Nd:YAG crystal rod with diameter of7.5 mm,length of 134 mm and doping concentration of 1.1%is used as gain medium in power amplification stage.Finally,we obtain the laser pulse with energy of 700 mJ and pulse width of 10 ns.
引文
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[18]Bezyazychnaya T V,Bogdanovich M V,Grigor′Ev A V,et al.Transversally diode-pumped Q-switched Nd:YAG laser with improved power and spatial characteristics[J].Optics Communications,2013,308(11):26-29.
[19]Coyle D B,Stysley P R,Poulios D,et al.High efficiency,100 mJ per pulse,Nd:YAG oscillator optimized for space-based earth and planetary remote sensing[J].Optics&Laser Technology,2014,63(6):13-18.
[20]Ryabtsev G I,Bogdanovich M V,Grigor′Ev A V,et al.Powerful all-solid-state multiwave laser for aerosol lidars[J].Journal of Optical Technology,2014,81(10):571-574.
[21]Dong J,Liu X S,Si H Y,et al.350 mJ LD sidepumped Q-switched Nd:YAG laser without water cooling[J].Chinese Journal of Lasers,2016,43(11):1101005.董剑,刘学胜,司汉英,等.350 mJ LD侧面抽运Nd:YAG无水冷调Q激光器[J].中国激光,2016,43(11):1101005.
[22]Liu X S,Wang Z Y,Yan X,et al.A high-energy good-beam-quality krypton-lamp-pumped Nd:YAGsolid-state laser with one pump cavity[J].Chinese Physics Letters,2008,25(2):521-523.
[2]Liu Y,Fang G Z,Ma X Y,et al.High power diode pumped solid state lasers[J].Laser and Infrared,2002,32(3):139-142.刘媛,方高瞻,马骁宇,等.大功率二极管泵浦固体激光器[J].激光与红外,2002,32(3):139-142.
[3]Fujikawa S,Furuta K,Yasui K.28%electricalefficiency operation of a diode-side-pumped Nd:YAGrod laser[J].Optics Letters,2001,26(9):602-604.
[4]Ma Y F,He Y,Li X D,et al.Continuous-wave and passively Q-switched tape casting YAG/Nd:YAG/YAG ceramic laser[J].Optical Materials Express,2016,6(9):2966-2974.
[5]Wang Z P,Liu H,Wang J Y,et al.Passively Q-switched dual-wavelength laser output of LD-endpumped ceramic Nd:YAG laser[J].Optics Express,2009,17(14):12076-12081.
[6]Yang L Y,Li J Q,Zhang J Y,et al.Thermal effect of composite crystals solid state lasers pumped by diode laser[J].Chinese Journal of Luminescence,2017,38(6):742-746.杨丽颖,李嘉强,张金玉,等.半导体激光泵浦复合晶体固体激光器的热效应[J].发光学报,2017,38(6):742-746.
[7]Ma Y F,Li X D,Yu X,et al.High-repetition-rate and short-pulse-width electro-optical cavity-dumped YVO4/Nd:GdVO4laser[J].Applied Optics,2014,53(14):3081-3084.
[8]Liu Q,Yan X P,Fu X,et al.High power all-solidstate fourth harmonic generation of 266 nm at the pulse repetition rate of 100kHz[J].Laser Physics Letters,2009,6(3):203-206.
[9]Cheng H P H,Jensen O B,Tidemand-Lichtenberg P,et al.Efficient quasi-three-level Nd:YAG laser at946nm pumped by a tunable external cavity tapered diode laser[J].Optics Communications,2010,283(23):4717-4721.
[10]Zendzian W,Jabczynski J K,Kwiatkowski J.High peak power Nd:YAG laser pumped by 600-W diode laser stack[J].Optics&Laser Technology,2008,40(3):441-444.
[11]Kofler H,Schwarz E,Wintner E.Experimental development of a monolithic passively Q-switched diode-pumped Nd:YAG laser[J].The European Physical Journal D,2010,58(2):209-218.
[12]Zheng Y,Lu H,Li Y,et al.Broadband and rapid tuning of an all-solid-state single-frequency Nd:YVO4laser[J].Applied Physics B,2008,90(3/4):485-488.
[13]Shardlow P C,Damzen M J.20Wsingle longitudinal mode Nd:YVO4retro-reflection ring laser operated as a self-intersecting master oscillator power amplifier[J].Applied Physics B,2009,97(2):257-262.
[14]Ottaway D J,Harris L,Veitch P J.Short-pulse actively Q-switched Er:YAG lasers[J].Optics Express,2016,24(14):15341-15350.
[15]Gan Q J,Jiang B X,Zhang P D,et al.Research progress of high average power solid-state lasers[J].Laser&Optoelectronics Progress,2017,54(1):010003.甘啟俊,姜本学,张攀德,等.高平均功率固体激光器研究进展[J].激光与光电子学进展,2017,54(1):010003.
[16]Ostermeyer M,Kappe P,Menzel R,et al.Diodepumped Nd:YAG master oscillator power amplifier with high pulse energy,excellent beam quality,and frequency-stabilized master oscillator as a basis for a next-generation lidar system[J].Applied Optics,2005,44(4):582-590.
[17]Chen X Y,Jin G Y,Yu Y J,et al.Electro-optic Q-switched of double LDA alternate symmetric sidepumped Nd:YAG laser[J].Acta Optica Sinica,2009,29(11):3098-3102.陈薪羽,金光勇,于永吉,等.双激光二极管阵列侧面交错抽运的电光调Q Nd:YAG激光器[J].光学学报,2009,29(11):3098-3102.
[18]Bezyazychnaya T V,Bogdanovich M V,Grigor′Ev A V,et al.Transversally diode-pumped Q-switched Nd:YAG laser with improved power and spatial characteristics[J].Optics Communications,2013,308(11):26-29.
[19]Coyle D B,Stysley P R,Poulios D,et al.High efficiency,100 mJ per pulse,Nd:YAG oscillator optimized for space-based earth and planetary remote sensing[J].Optics&Laser Technology,2014,63(6):13-18.
[20]Ryabtsev G I,Bogdanovich M V,Grigor′Ev A V,et al.Powerful all-solid-state multiwave laser for aerosol lidars[J].Journal of Optical Technology,2014,81(10):571-574.
[21]Dong J,Liu X S,Si H Y,et al.350 mJ LD sidepumped Q-switched Nd:YAG laser without water cooling[J].Chinese Journal of Lasers,2016,43(11):1101005.董剑,刘学胜,司汉英,等.350 mJ LD侧面抽运Nd:YAG无水冷调Q激光器[J].中国激光,2016,43(11):1101005.
[22]Liu X S,Wang Z Y,Yan X,et al.A high-energy good-beam-quality krypton-lamp-pumped Nd:YAGsolid-state laser with one pump cavity[J].Chinese Physics Letters,2008,25(2):521-523.