基于半导体光放大器的双脉冲激光器
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摘要
为了得到脉宽可调谐的双脉冲激光器,提出了基于半导体光放大器的8字腔激光器结构。该方案中,将半导体光放大器置于非线性光纤环镜的非对称位置,应用半导体光放大器的非线性偏振旋转产生激光脉冲,当半导体光放大器的驱动电流为200 m A时,通过调整腔内的偏振控制器,得到重复频率为10.05 MHz和12.70 MHz,脉冲宽度分别为33.40 ns和30.08 ns的双脉冲,同时改变激光器腔长以及半导体光放大器在非线性放大镜中的位置,应用非线性光纤环镜的开关特性,双脉冲的脉宽也做相应的改变。
Key Laboratory of Film Electronics and Communication Devices. In order to obtain double-pulse with tunable pulse width, a scheme of laser structure based on semiconductor optical amplifier(SOA) is proposed. In this scheme, the SOA is put asymmetric in the nonlinear optical fiber loop mirror, pulse produced by nonlinear polarization rotation of the SOA. when the drive current of the SOA is up to 200 m A, through adjusting the polarization controller, double-pulses with pulse durations of 33.40 ns and 30.08 ns, with frequency repetitions of10.05 MHz and 12.70 MHz are achieved, respectively. By changing the cavity length of the laser and the position of the SOA in the nonlinear amplifying loop mirror(NALM), double-pulse width changes accordingly due to the switch characteristics of the NALM.
Key Laboratory of Film Electronics and Communication Devices. In order to obtain double-pulse with tunable pulse width, a scheme of laser structure based on semiconductor optical amplifier(SOA) is proposed. In this scheme, the SOA is put asymmetric in the nonlinear optical fiber loop mirror, pulse produced by nonlinear polarization rotation of the SOA. when the drive current of the SOA is up to 200 m A, through adjusting the polarization controller, double-pulses with pulse durations of 33.40 ns and 30.08 ns, with frequency repetitions of10.05 MHz and 12.70 MHz are achieved, respectively. By changing the cavity length of the laser and the position of the SOA in the nonlinear amplifying loop mirror(NALM), double-pulse width changes accordingly due to the switch characteristics of the NALM.
引文
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12 I N Duling,C J Chen,P K A Wai,et al..Operation of a nonlinear loop mirror in a laser cavity[J].IEEE J Quantum Electron,1994,30(1):194-199.
13 M J Guy,D U Noske,J R Taylor,Generation of femtosecond soliton pulses by passive mode locking of an ytterbium-erbium figureof-eight fiber laser[J].Opt Lett,1993,18(17):1447-1449.
14 T O Tsun,M K Islam,P L Chu.High-energy femtosecond figure-eight fiber laser[J].Opt Commun,1997,141(1-2):65-68.
15 S Min,Y Zhao,S Fleming.Semiconductor optical amplifier based high duty-cycle,self-starting figure-eight 1.7 GHz laser source[J].Opt Express,2009,17(8):6187-6193.
16 J Y Wang,K H Lin,H R Chen.Generation of optical waveforms in 1.3-μm SOA-based fiber lasers[J].Laser Phys,2012,22(1):216-220.
17 M Usami,R Inohara,K Nishimura,et al..Experimental analysis of cross gain modulation and cross phase modulation in SOA with assist light injection[C].LEOS Summer Topic,2002:Tu K1.
18 Pan Honggang,Yu Jinlong,Wang Wenrui,et al..Semiconductor optical amplifier based self-mode locking laser and phenomenon of dimidiate frequency[J].Chinese J Lasers,2013,40(11):1120006.潘洪刚,于晋龙,王文睿,等.基于半导体光放大器的自锁模激光器及重复频率分频现象[J].中国激光,2013,40(11):1120006.
19 Pang Huanggang,Zhang Zhiyuan,Yan Senlin,et al..Study on the switching characteristics of TOAD[J].Chinese J Lasers,2001,28(7):641-644.逄焕刚,张志远,颜森林,等.TOAD的开关特性研究[J].中国激光,2001,28(7):641-644.
20 J M Tang,P S Spencer,P Reeset.Enhanced TOAD performance by negative frequency-detuned signal and control picosecond optical pulses[J].IEEE J Quantum Electron,2000,36(5):574-581.
2 Wang Xiaolong,Sang Mei,Zhu Pan,et al..Passively Q-switched pulse fiber laser based on graphene saturable absorber[J].Chinese J Lasers,2013,40(6):0602015.王晓龙,桑梅,朱攀,等.基于石墨烯可饱和吸收体的被动调Q光纤激光器[J].中国激光,2013,40(6):0602015.
3 Xun Doudou,Yang Sigang,Yin Feifei,et al..Widely tunable mode-locked fiber operating in 1μm wavelength range[J].Acta Optica Sinica,2013,33(7):0706013.苟斗斗,杨四刚,尹飞飞,等.1μm波段宽带可调谐锁模光纤激光器[J].光学学报,2013,33(7):0706013.
4 G J Koch,B W Barnes,M Petros,et al..Coherent differential absorption lidar measurements of CO2[J].Appl Opt,2004,43(26):5092-5099.
5 K Walther,M Brajdic,E W Kreutz.Enhanced processing speed in laser drilling of stainless steel by spatially and temporally superposed pulsed Nd∶YAG laser radiation[J].Int J Adv Manuf Technol,2008,35(9-10):895-899.
6 Li Feng,Ni Xuxiang,Wu Bizhen,et al..New method to realiz double-pulse laser at high repetition[J].Acta Photonica Sinica,1998,27(4):342-347.李峰,倪旭翔,吴碧珍,等.实现高重复率双脉冲激光器的新方法[J].光子学报,1998,27(4):342-347.
7 Wang Xiaodong,M Andreas,D Friedrich,et al..Double-pulse technique for short pulse laser drilling[J].Laser Technol,2009,33(3):283-286.王晓东,M Andreas,D Friedrich,等.短脉冲激光微孔制备的双脉冲方法研究[J].激光技术,2009,33(3):283-286.
8 J Yu,A Broud,M Petros.600-m J,double-pulse 2-μm laser[J].Opt Lett,2003,28(2):540-542.
9 Qu Shiliang,Liu Wenjun,Bai Bing,et al..Generating femtosecond double pulses using Dammann reflection gratings[J].Acta Phys Sin,2007,56(6):3292-3299.曲士良,刘文军,白冰,等.用反射式达曼光栅产生飞秒激光双脉冲[J].物理学报,2007,56(6):3292-3299.
10 D J Richardson,R I Laming,D N Payne,et al..Selfstarting,passively mode locked erbium fibre ring laser based on the amplifying Sagnac switch[J].Electron Lett,1991,27(6):730-732.
11 I N Duling.Subpicosecond all-fibre erbium laser[J].Electron Lett,1991,27(6):544-545.
12 I N Duling,C J Chen,P K A Wai,et al..Operation of a nonlinear loop mirror in a laser cavity[J].IEEE J Quantum Electron,1994,30(1):194-199.
13 M J Guy,D U Noske,J R Taylor,Generation of femtosecond soliton pulses by passive mode locking of an ytterbium-erbium figureof-eight fiber laser[J].Opt Lett,1993,18(17):1447-1449.
14 T O Tsun,M K Islam,P L Chu.High-energy femtosecond figure-eight fiber laser[J].Opt Commun,1997,141(1-2):65-68.
15 S Min,Y Zhao,S Fleming.Semiconductor optical amplifier based high duty-cycle,self-starting figure-eight 1.7 GHz laser source[J].Opt Express,2009,17(8):6187-6193.
16 J Y Wang,K H Lin,H R Chen.Generation of optical waveforms in 1.3-μm SOA-based fiber lasers[J].Laser Phys,2012,22(1):216-220.
17 M Usami,R Inohara,K Nishimura,et al..Experimental analysis of cross gain modulation and cross phase modulation in SOA with assist light injection[C].LEOS Summer Topic,2002:Tu K1.
18 Pan Honggang,Yu Jinlong,Wang Wenrui,et al..Semiconductor optical amplifier based self-mode locking laser and phenomenon of dimidiate frequency[J].Chinese J Lasers,2013,40(11):1120006.潘洪刚,于晋龙,王文睿,等.基于半导体光放大器的自锁模激光器及重复频率分频现象[J].中国激光,2013,40(11):1120006.
19 Pang Huanggang,Zhang Zhiyuan,Yan Senlin,et al..Study on the switching characteristics of TOAD[J].Chinese J Lasers,2001,28(7):641-644.逄焕刚,张志远,颜森林,等.TOAD的开关特性研究[J].中国激光,2001,28(7):641-644.
20 J M Tang,P S Spencer,P Reeset.Enhanced TOAD performance by negative frequency-detuned signal and control picosecond optical pulses[J].IEEE J Quantum Electron,2000,36(5):574-581.