基于二硫化钨可饱和吸收体双波长被动调Q Yb∶GdYSiO_5激光器（英文）
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摘要
基于新型可饱和吸收体二硫化钨在Yb∶GdYSiO_5晶体中实现了双波长调Q激光的输出.将二硫化钨纳米薄片溶液涂覆在具有高反射率的BK7玻璃基底上,制成二硫化钨可饱和吸收镜用于启动调Q.采用光纤耦合输出的二极管激光器作为泵浦源,其发射激光的中心波长约为976nm.通过调节谐振腔以及选择合适的泵浦功率,在波长为1 051nm和1 091nm附近同时实现了稳定调Q激光输出.调Q激光脉冲宽度为8.4μs,重复频率为2.9kHz,平均输出功率为125mW.
A dual-wavelength passively Q-switched Yb∶GdYSiO_5 laser based on a W_S2 saturable absorber mirror was proposed.The WS_2 nanoplatelets solution was coated on a BK7 glass substrate with highreflective-index thin polymer to be a WS_2 saturable absorber mirror for starting Q-switching operation.By tuning the resonant cavity and selecting a suitable pumping power,the stable Q-switched laser pulses at 1051 nm and 1091 nm were simultaneously generated with a 976-nm fiber-coupled diode laser as pump source.The laser pulses had a pulse duration of 8.4μs,a repetition rate of 2.9 kHz,and an average output power of 125 mW,respectively.
A dual-wavelength passively Q-switched Yb∶GdYSiO_5 laser based on a W_S2 saturable absorber mirror was proposed.The WS_2 nanoplatelets solution was coated on a BK7 glass substrate with highreflective-index thin polymer to be a WS_2 saturable absorber mirror for starting Q-switching operation.By tuning the resonant cavity and selecting a suitable pumping power,the stable Q-switched laser pulses at 1051 nm and 1091 nm were simultaneously generated with a 976-nm fiber-coupled diode laser as pump source.The laser pulses had a pulse duration of 8.4μs,a repetition rate of 2.9 kHz,and an average output power of 125 mW,respectively.
引文
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[28]WANG Xi,WANG Yong-gang,DUAN Li-na,et al.Passively Q-switched Nd∶YAG laser via a WS2 saturable absorber[J].Optics Communications,2016,367:234-238.
[29]DU Juan,LIANG Xiao-yan,XU Yi,et al.Tunable and efficient diode-pumped Yb3+∶GYSO laser[J].Optics Express,2006,14(8):3333-3338.
[30]KOGELNIK H.Imaging of optical modes-resonators with internal lanses[J].The Bell System Technical Journal,1965,44(3):455-494.
[2]KIRILYUK A,KIMEL A V,RASING T.Ultrafast optical manipulation of magnetic order[J].Review of Modern Physics,2010,82(3):2731-2784.
[3]KELLER U,WEINGARTEN K J,KRTNER F X,et al.Semiconductor saturable absorber mirrors(SESAM's)for femtosecond to nanosecond pulse generation in solid-state lasers[J].IEEE Journal Selected Topics Quantum Electronics,1996,2(3):435-453.
[4]SHIMONY Y,BURSHTEIN Z,KALISKY Y.Cr4+∶YAG as passive Q-switch and brewster plate in a pulsed Nd∶YAG laser[J].IEEE Journal Quantum Electronics,1995,31(10):1738-1741.
[5]WANG Zheng-ping,DU Chen-Lin,ZHANG Huai-jin,et al.LD-pumped Nd∶LuVO4/Cr4+∶YAG Passively Q-switched Laser[J].Acta Photonica Sinica,2006,35(8):1130-1132.
[6]GUO Jun-hong,DUAN Yan-min,ZHANG Jing,et al.Investigation on passively Q-switch output characteristics of Nd∶YAG/Cr4+∶YAG/YAG composite crystal Laser[J].Acta Photonica Sinica,2018,47(2):0214002.
[7]LUO Xiao-xian,ZHAO Bai-qin,JI Ya-fei,et al.Optimization of passively Q-switched lasers pumped by ellipse Gaussian distribution LD[J].Infrared and Laser Engineering,2017,46(3):305003.
[8]KELLER U.Ultrafast solid-state laser oscillators:a success story for the last 20years with no end in sight[J].Applied Physics B,2010,100(1):15-28.
[9]BAO Qiao-liang,ZHANG Han,WANG Yu,et al.Atomic-layer graphene as a saturable absorber for ultrafast pulsed lasers[J].Advanced Functional Materials,2009,19(19):3077-3083.
[10]WANG Yong-gang,CHEN Hou-ren,WEN Xiao-ming,et al.A highly efficient graphene oxide absorber for Q-switched Nd:GdVO4lasers[J].Nanotechnology,2011,22(45):455203.
[11]SCHMIDT A,RIVIER S,CHO W B,et al.Sub-100fs single-walled carbon nanotube saturable absorber mode-locked Yb-laser operation near 1μm[J].Optics Express,2009,17(22):20109-20116.
[12]LI Chun,LIU Jie,GUO Zhi-nan,et al.Black phosphorus saturable absorber for a diode-pumped passively Q-switched Er:CaF2mid-infrared laser[J].Optics Communications,2018,406:158-162.
[13]ZHAO Chu-jun,ZHANG Han,QI Xiang,et al.Ultra-short pulse generation by a topological insulator based saturable absorber[J].Applied Physics Letters,2012,101(21):211106.
[14]MOHANRAJ J,VELMURUGAN V,SIVABALAN S.Transition metal dichalcogenides based saturable absorbers for pulsed laser technology[J].Optical Materials,2016,60:601-617.
[15]MAO Dong,WANG Ya-dong,MA Chao-jie,et al.WS2 mode-locked ultrafast fiber laser[J].Scientific Reports,2015,5:7965.
[16]LIN Jian,HU Yang-yang,CHEN Chang-jia,et al.Wavelength-tunable Yb-doped passively Q-switching fiber laser based on WS2saturable absorber[J].Optics Express,2015,23(22):29059-29064.
[17]LI Wen-song,PENG Jian,ZHONG Yi-le,et al.Orange-light passively Q-switched Pr3+-doped all-fiber lasers with transition-metal dichalcogenide saturable absorbers[J].Optical Materials Express,2016,6(6):2031-2039.
[18]CHENG Yong-jie,PENG Jian,XU Bin,et al.Passive Q-switching of a diode-pumped Pr∶LiYF4visible laser using WS2as saturable absorber[J].IEEE Photonics Journal,2016,8(3):1501506.
[19]GAO Y J,ZHANG B Y,SONG Q,et al.Dual-wavelength passively Q-switched Nd∶GYSGG laser by tungsten disulfide saturable absorber[J].Applied Optics,2016,55(18):4929-4932.
[20]LUAN Chao,YANG Ke-jian,ZHAO Jia,et al.WS2as a saturable absorber for Q-switched 2micron lasers[J].Optics Letters,2016,41(16):3783-3786.
[21]GUO Lei,LI Tao,ZHANG Shuai-yi,et al.Passively Q-switched Ho,Pr∶LiLuF4bulk laser at 2.95μm using WS2saturable absorbers[J].Optical Materials Express,2017,7(6):2090-2095.
[22]LIU Jing-hui,TIAN Jin-rong,GUOYU He-yang,et al.Passively Q-switched dual-wavelength Yb∶LSO laser based on tungsten disulphide saturable absorber[J].Chinese Physics B,2016,25(3):034207.
[23]WANG Xi-hu,XU Jin-long,YOU Zhen-yu,et al.Tri-wavelength passively Q-switched Yb3+∶GdAl3(BO3)4solidstate laser based on WS2saturable absorber[J].Optical Materials,2016,62:621-625.
[24]HOU Jia,ZHAO Gang,WU Yong-zhong,et al.Femtosecond solid-state laser based on tungsten disulfide saturable absorber[J].Optics Express,2015,23(21):27292-27298.
[25]ZHU Jiang-feng,TIAN Wen-long,WANG Jun-li,et al.Diode-pumped passively mode-locked Yb∶GYSO laser generating 324fs pulses at 1091nm[J].Optics Letters,2012,37(24):5190-5192.
[26]WANG Yan-dang,YANG Ke-jian,ZHAO Sheng-zhi,et al.Diode-pumped high-peak-power femtosecond Yb+3∶(Gd0.1Y0.9)2SiO5laser at 1058.5nm[J].Applied Physics Express,2017,10(9):092701.
[27]ZHU Jiang-feng,GAO Zi-ye,TIAN Wen-long,et al.Kerr-lens mode-locked femtosecond Yb∶GdYSiO5laser directly pumped by a laser diode[J].Applied Sciences,2015,5(4):817-824.
[28]WANG Xi,WANG Yong-gang,DUAN Li-na,et al.Passively Q-switched Nd∶YAG laser via a WS2 saturable absorber[J].Optics Communications,2016,367:234-238.
[29]DU Juan,LIANG Xiao-yan,XU Yi,et al.Tunable and efficient diode-pumped Yb3+∶GYSO laser[J].Optics Express,2006,14(8):3333-3338.
[30]KOGELNIK H.Imaging of optical modes-resonators with internal lanses[J].The Bell System Technical Journal,1965,44(3):455-494.