基于SESAM被动调Q的激光二极管泵浦Yb∶CaYAlO_4脉冲激光器
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摘要
采用发射波长约为976 nm的半导体激光器作为泵浦源,Yb~(3+)掺杂浓度为1. 5at.%、通光长度为2 mm的Yb∶CaYAlO_4晶体作为增益介质,本文提出了一种基于半导体可饱和吸收镜(SESAM)被动调Q的激光二极管泵浦Yb∶CaYAlO_4以获取稳定脉冲输出的方案。通过合理设计谐振腔,实现了稳定的被动调Q激光脉冲输出,并分析了泵浦功率的大小对输出脉冲的重复频率、脉冲宽度、单脉冲能量以及脉冲峰值功率的影响。
By utilizing a fiber-coupled laser diode emitting at a wavelength of around 976 nm as a pump source and a Yb ∶CaYAlO_4 crystal with a Yb~(3+) ion doping concentration of 1. 5 at.% and a thickness of 2 mm as the gain medium,a scheme of laser diode-pumped Yb ∶CaYAlO_4 for passively Q-switched pulsed lasers using a semiconductor saturable absorber mirror( SESAM) is proposed. By reasonably designing the resonant cavity,a stable passively Q-switched pulsed output is achieved. Furthermore,the influence of the pump power on the pulse repetition rate,pulse width,single pulse energy and peak power are analyzed.
By utilizing a fiber-coupled laser diode emitting at a wavelength of around 976 nm as a pump source and a Yb ∶CaYAlO_4 crystal with a Yb~(3+) ion doping concentration of 1. 5 at.% and a thickness of 2 mm as the gain medium,a scheme of laser diode-pumped Yb ∶CaYAlO_4 for passively Q-switched pulsed lasers using a semiconductor saturable absorber mirror( SESAM) is proposed. By reasonably designing the resonant cavity,a stable passively Q-switched pulsed output is achieved. Furthermore,the influence of the pump power on the pulse repetition rate,pulse width,single pulse energy and peak power are analyzed.
引文
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[33]GAO Z Y,ZHU J F,WANG J L,et al..Generation of 33 fs pulses directly from a Kerr-lens mode-locked Yb∶Ca YAl O4laser[J].Photonics Research,2015,3(6):335-338.
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[35]DEGNAN J J.Theory of the optimally coupled Q-switched laser[J].IEEE Journal of Quantum Electronics,1989,25(2):214-220.
[36]冯立春,霍玉晶,何淑芳,等.激光二极管抽运声光调Q高重复频率532 nm激光器[J].中国激光,2005,32(4):461-465.FENG L CH,HUO Y J,HE SH F,et al..LD-pumped acousto optically Q-switched 532 nm laser with high repetition rate[J].Chinese Journal of Lasers,2005,32(4):461-465.(in Chinese)
[2]KELLER U.Recent developments in compact ultrafast lasers[J].Nature,2003,424(6950):831-838.
[3]UDEM T,HOLZWARTH R,HANSCH T W.Optical frequency metrology[J].Nature,2002,416(6877):233-237.
[4]SCHAFFER C B,BRODEUR A,GARCIA J F,et al..Micromachining bulk glass by use of femtosecond laser pulses with nanojoule energy[J].Optics Letters,2001,26(2):93-95.
[5]程秀凤,陈丽娟,韩树娟,等.LD端面泵浦Nd∶Li Gd(MoO4)2晶体的主动调Q脉冲激光特性[J].光学精密工程,2013,21(4):835-840.CHENG X F,CHEN L J,HAN SH J,et al..Actively Q-switched pulse laser from LD end-pumped Nd∶Li Gd(MoO4)2crystals[J].Opt.Precision Eng.,2013,21(4):835-840.(in Chinese)
[6]李景照,陈振强,朱思祁.基于Yb∶YAG/Cr(4+)∶YAG/YAG键合晶体的被动调Q激光器[J].光学精密工程,2018,26(1):55-61.LI J ZH,CHEN ZH Q,ZHU S Q.Passively Q-switched laser with a Yb∶YAG/Cr4+∶YAG/YAG composite crystal[J].Opt.Precision Eng.,2018,26(1):55-61.(in Chinese)
[7]KELLER U,WEINGARTEN K J,KERTNER F X,et al..Semiconductor saturable absorber mirrors(SESAM's)for femtosecond to nanosecond pulse generation in solid-state lasers[J].IEEE Journal of Selected Topics in Quantum Electronics,1996,2(3):435-453.
[8]KELLER U.Ultrafast solid-state laser oscillators:a success story for the last 20 years with no end in sight[J].Applied Physics B,2010,100(1):15-28.
[9]王加贤,庄鑫巍.基于半导体可饱和吸收镜实现闪光灯抽运Nd∶YAG激光器的被动调Q与锁模[J].光学精密工程,2006,14(4):583-587.WANG J X,ZHUANG X W.Passive Q-switching and mode-locking in a flash lamp-pumped Nd∶YAG laser with semiconductor saturable absorption mirror[J].Opt.Precision Eng.,2006,14(4):583-587.(in Chinese)
[10]SUN D,WU Z K,DIVIN C,et al..Ultrafast relaxation of excited dirac fermions in epitaxial graphene using optical differential transmission spectroscopy[J].Physical Review Letters,2008,101(15):157402.
[11]SCHMIDT A,RIVIER S,CHO W B,et al..Sub-100 fs single-walled carbon nanotube saturable absorber mode-locked Yb-laser operation near 1μm[J].Optics Express,2009,17(22):20109-20116.
[12]ZHAO C J,ZHANG H,QI X,et al..Ultra-short pulse generation by a topological insulator based saturable absorber[J].Applied Physics Letters,2012,101(21):211106.
[13]CHEN B H,ZHANG X Y,WU K,et al..Q-switched fiber laser based on transition metal dichalcogenides MoS2,MoSe2,WS2,and WSe2[J].Optics Express,2015,23(20):26723-26737.
[14]LIU J H,TIAN J R,GUO Y H Y,et al..Passively Q-switched dual-wavelength Yb∶LSO laser based on tungsten disulphide saturable absorber[J].Chinese Physics B,2016,25(3):034207.
[15]TSUNEKANE M,TAIRA T.High-power operation of diode edge-pumped,composite all-ceramic Yb∶Y3Al5O12microchip laser[J].Applied Physics Letters,2007,90(12):121101.
[16]TOKURAKAWA M,SHIRAKAWA A,UEDA K,et al..Diode-pumped sub-100 fs Kerr-lens mode-locked Yb∶Sc2O3ceramic laser with high average power[J].Optics Express,2007,32(23):3382-3384.
[17]PARSONAGE T L,BEECHER S J,CHOUDHARY A,et al..Pulsed laser deposited diode-pumped 7.4 W Yb∶Lu2O3planar waveguide laser[J].Optics Express,2015,23(25):31691-31697.
[18]SVILLANO P,GEORGES P,DRUON F,et al..32-fs Kerr-lens mode-locked Yb∶Ca Gd Al O4oscillator optically pumped by a bright fiber laser[J].Optics Letters,2014,39(20):6001-6004.
[19]PIRZIO F,CAFISO S D,KEMNITZER M,et al..Sub-50-fs widely tunable Yb∶Ca YAl O4laser pumped by 400-mW single-mode fiber-coupled laser diode[J].Optics Express,2015,23(8):9790-9795.
[20]LI W X,HAO Q,ZHAI H,et al..Diode-pumped Yb∶GSO femtosecond laser[J].Optics Express,2007,15(5):2354-2359.
[21]TIAN W L,WANG Z H,LIU J X,et al..Dissipative soliton and synchronously dual-wavelength mode-locking Yb∶YSO lasers[J].Optics Express,2015,23(7):8731-8739.
[22]LAGATSKY A A,SARMANI A R,BROWN C T,et al..Yb3+-doped YVO4crystal for efficient Kerr-lens mode locking in solid-state lasers[J].Optics Letters,2005,30(23):3234-3236.
[23]RIVIER S,MATEOS X,LIU J H,et al..Passively mode-locked Yb∶Lu VO4oscillator[J].Optics Express,2006,14(24):11668-11671.
[24]DRUON F,CHENAIS S,RAYBAUT P,et al..Diode-pumped Yb∶Sr3Y(BO3)3femtosecond laser[J].Optics Letters,2002,27(3):197-199.
[25]DRUON F,BALEMBOIS F,GEORGES P,et al..Generation of 90-fs pulses from a mode-locked diode-pumped Yb3+∶Ca4Gd O(BO3)3laser[J].Optics Letters,2000,25(6):423-425.
[26]YANG H,KIM H,SHIN J,et al..Gigahertz repetition rate,sub-femtosecond timing jitter optical pulse train directly generated from a mode-locked Yb∶KYW laser[J].Optics Letters,2014,39(1):56-59.
[27]KISEL V E,RUDENKOV A S,PAVLYUK A A,et al..High-power,efficient,semiconductor saturable absorber modelocked Yb∶KGW bulk laser[J].Optics Letters,2015,40(12):2707-2710.
[28]朱江峰,田文龙,高子叶,等.二极管泵浦全固态飞秒Yb激光振荡器[J].中国激光,2017,44(9):0900001.ZHU J F,TIAN W L,GAO Z Y,et al..Diode-pumped all-solid-state femtosecond Yb laser oscillators[J].Chinese Journal of Lasers,2017,44(9):0900001.(in Chinese)
[29]刘亮,崔俊伟,李文景,等.LD泵浦的准连续输出双包层掺镱光纤激光器[J].中国光学,2012,5(6):663-670.LIU L,CUI J W,LI W J,et al..Yb3+-doped double-clad quasi-continuous wave fiber laser pumped by laser diode[J].Chinese Optics,2012,5(6):663-670.(in Chinese)
[30]LI D Z,XU X D,CHENG Y,et al..Crystal growth and spectroscopic properties of Yb∶Ca YAl O4single crystal[J].Journal of Crystal Growth,2010,312(14):2117-2121.
[31]LI D Z,XU X D,ZHU H M,et al..Characterization of laser crystal Yb∶Ca YAl O4[J].Journal of the Optical Society of America B,2011,28(7):1650-1654.
[32]TAN W D,TANG D Y,XU X D,et al..Femtosecond and continuous-wave laser performance of a diode-pumped Yb∶Ca Y-Al O4laser[J].Optics Letters,2011,36(2):259-261.
[33]GAO Z Y,ZHU J F,WANG J L,et al..Generation of 33 fs pulses directly from a Kerr-lens mode-locked Yb∶Ca YAl O4laser[J].Photonics Research,2015,3(6):335-338.
[34]MA J,HUANG H T,NING K J,et al..Generation of 30 fs pulses from a diode-pumped graphene mode-locked Yb∶Ca YA-l O4laser[J].Optics Letters,2016,41(5):890-893.
[35]DEGNAN J J.Theory of the optimally coupled Q-switched laser[J].IEEE Journal of Quantum Electronics,1989,25(2):214-220.
[36]冯立春,霍玉晶,何淑芳,等.激光二极管抽运声光调Q高重复频率532 nm激光器[J].中国激光,2005,32(4):461-465.FENG L CH,HUO Y J,HE SH F,et al..LD-pumped acousto optically Q-switched 532 nm laser with high repetition rate[J].Chinese Journal of Lasers,2005,32(4):461-465.(in Chinese)