共查询到20条相似文献,搜索用时 31 毫秒
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M. Tassaert S. Keyvaninia D. Van Thourhout W. M. J. Green Y. Vlasov G. Roelkens 《Optical and Quantum Electronics》2012,44(12-13):513-519
A small footprint integrated optical amplifier on Silicon-on-insulator is proposed in this article. By choosing to use optical pumping to drive the device, electrical contacting is avoided and the active waveguide can be made as thin as 100?nm, maximizing the optical confinement in the quantum well layers. Furthermore, the optical pumping is done through the silicon waveguide layer to optimally use the pump light. This leads to a compact device with high gain. We show 8?dB gain in pulsed regime in a 100?μm long device using a peak pump power of only 4.5?mW, while a comparable gain using an electrically pumped device would require an order of magnitude higher power consumption. This is an important step towards a CMOS-compatible optical amplifier for intra-chip optical interconnects. 相似文献
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Mengmeng Tao Guobin Feng Ting Yu Zhenbao Wang Yanlong Shen Xisheng Ye 《Journal of Russian Laser Research》2016,37(4):395-400
We build a Tm-doped fiber amplifier based on a gain-switched seed laser. At Er-doped fiber-laser pumping, the maximum peak power of the gain-switched seed pulse is 227.7 W with a pulse duration of 48.3 ns. In the amplifier, peak power of the amplified pulse reaches 1.1 kW with a 3 dB linewidth of 0.06 nm. Supercontinuum generation is observed when this amplified pulsed laser source is injected into a section of 7 m long Tm-doped double-clad fiber. 相似文献
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Yb-Bi pulsed fiber lasers 总被引:1,自引:0,他引:1
A new type of pulsed fiber laser is suggested and developed - Yb-Bi lasers. In such lasers the Yb fiber laser is Q-switched by use of a saturable absorber, a Bi-doped fiber placed in its own resonator, and pulsed lasing is obtained in both fiber lasers. Continous-wave diode-clad pumping of the Yb-Bi lasers at a 975 nm wavelength with power up to 16.5 W results in pulsed laser action in a spectral diapason of 1050-1200 nm with a maximum pulse energy of up to 100 microJ, an average power up to 7.5 W, and a repetition rate up to 100 kHz. 相似文献
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飞秒光学频率梳波长覆盖范围向可见光波长扩展对于碘稳频激光的绝对频率测量以及光钟研究中钟激光的绝对频率测量都具有十分重要的意义. 本文在自行研制掺Er光纤飞秒光学频率梳的基础上, 采用放大-倍频-扩谱的方案, 实现了激光输出波长向可见光波长的扩展. 掺Er光纤飞秒光学频率梳输出的一部分光激光脉冲, 功率约为8 mW, 首先经掺Er光纤放大器将功率提高到531 mW, 此后利用MgO: PPLN晶体倍频, 倍频后激光的功率为170 mW, 倍频效率为32%, 脉冲宽度为85 fs. 倍频后的激光通过光子晶体光纤进行光谱展宽. 通过优化入射光偏振状态可以实现波长覆盖500-1000 nm, 输出功率为85 mW, 耦合效率为50%. 采用小型化碘稳频532 nm Nd: YAG激光器输出激光与光学频率梳光谱展宽后的激光进行拍频可以获得30 dB的拍频信号. 覆盖可见光波长的掺Er光纤飞秒光学频率梳为可见光范围内激光的绝对频率测量提供了技术手段. 相似文献
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以光纤光栅为谐振腔搭建了波长为1020 nm的光纤激光器,并通过两级级联放大获得了590 mW的最大输出功率. 利用获得的波长为1020 nm的激光进行了波长为1064 nm种子光同带抽运放大,实验研究了不同增益光纤长度时放大器的输出功率和转换效率. 当增益光纤长度为8.5 m时,放大器最大输出功率为385 mW,斜率效率为81%. 进行了波长为976 nm的半导体激光器直接抽运波长为1064 nm种子光的实验. 在增益光纤长度最优时,其斜率效率为56.4%. 实验结果表明,同带抽运方式比传统抽运方式具有更高的转换效率. 研究结果可为波长为1020 nm的激光高功率放大和波长为1064 nm的光纤激光高功率同带抽运放大提供一定的参考.
关键词:
同带抽运
光纤放大器
斜率效率 相似文献
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In this work, we propose and experimentally investigate an ultra-broadband amplified spontaneous emission (ASE) light source with 113.8 nm bandwidth (1446.2 to 1560.0 nm) by using a cascaded two-stage optical amplifier, which is consisted of semiconductor optical amplifier (SOA, 1st stage) and erbiumdoped fiber amplifier (EDFA, 2nd stage), when the output intensity is above ?35 dBm/0.01 nm. And, the EDFA only uses a 3 m long erbium-doped fiber (EDF) with a 27 mW pumping power and SOA is driven at 200 mA bias current. Moreover, the proposed amplifier also can provide a broadband gain amplification of 114 nm in the wavelengths of 1464.0 and 1578.0 nm with the noise figure distribution of 6.8 to 8.1 dB. 相似文献
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掺Er3+飞秒光纤放大器的特性研究 总被引:1,自引:1,他引:0
依据二能级速率方程和光传输方程,理论计算了Er3+光纤放大器中Er3+光纤的最佳长度Lc. 以全光纤飞秒激光器输出的孤子脉冲作为种子源,以理论值Lc作为实际采用的光纤长度,实验测量了Er3+光纤放大器在同向泵浦和反向泵浦下信号光的输出功率,得到同向泵浦的增益为20.0dB, 反向泵浦的增益为20.2 dB.同时测量了脉冲宽度随泵浦功率的变化,实验结果表明,随着泵浦功率的增大,输出光脉冲的宽度的压缩效应经历逐渐增强后逐渐减弱的过程.在同向泵浦方式下,可以得到更短的输出脉宽,其最短脉冲宽度为260 fs. 相似文献
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A pulsed master-oscillator fiber power amplifier system with near diffraction-limited output by use of China-made large-mode-area fiber and a (2 + 1) × 1 multimode combiner is reported. The effect of the seed power on the amplification performance is found. For the seed power, there exists a range within which the pulsed fiber amplifier can operate safely and reliably at a certain pump power. With the seed average power of 70 mW, the amplification performances of the fiber amplifier are investigated. 相似文献
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高聪 刘念 李峰云 刘玙 代江云 沈昌乐 贺红磊 吕嘉坤 李芳 张立华 李雨薇 姜蕾 郭超 陶汝茂 柯伟伟 张昊宇 王建军 林宏奂 景峰 《强激光与粒子束》2022,34(5):051002-1-051002-3
长距离侧面泵浦激光光纤在泵浦光注入、热管理、非线性抑制等方面具有天然优势,是实现高功率激光输出的有效途径。研制了(1+1)型长距离侧面泵浦激光光纤,采用1018 nm同带泵浦反向注入方式实现了17.4 kW激光输出,斜率效率为82.1%,3 dB线宽为1.3 nm,拉曼抑制比为37.8 dB。研究结果展示了长距离侧面泵浦光纤作为数十千瓦光纤激光放大器增益介质的巨大应用潜力。 相似文献
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1410 nm波段分布式光纤拉曼增益放大器的研究 总被引:6,自引:2,他引:4
讨论了分布式光纤拉曼增益放大器的工作原理,采用1320nm固体激光器作为抽运源,获得了1410nm波段附近的光放大,在单模GI光纤长度为23km时,初步研究了拉曼放大器增益与光纤作用长度的关系,抽运脉冲峰值功率分别为50W、30W时,光纤的有效作用长度分别为15.5km和10.5km;研究了在不同的光纤有效作用长度时,拉曼放大器增益与抽运功率的关系;从光纤拉曼光谱图估算了光纤拉曼放大器的光谱宽度为50nm或250cm^-1。 相似文献
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在忽略高能级的自发辐射和光纤损耗的情况下,利用速率方程和传输方程理论研究了高浓度Er3+/Yb3+共掺磷酸盐玻璃光纤放大器的增益特性,讨论了Er3+浓度、Yb3+浓度、抽运光功率、信号光功率、光纤长度对放大器增益的影响,并与单掺铒光纤放大器进行了比较.由于Yb3+的敏化作用降低了铒离子的团簇效应,减少了离子间相互作用,共掺光纤的增益和效率明显高于单掺光纤.数值计算表明,3.2cm长Er3+/Yb3+共掺光纤在980nm的20dBm(100mW)抽运功率下,1532nm处的增益可达10dB.
关键词:
镱铒共掺光纤放大器
速率方程
传输方程
高浓度 相似文献
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双包层掺染料聚合物光纤放大器的增益性能分析 总被引:3,自引:2,他引:1
双包层聚合物光纤放大器可以减小染料的热漂白,使用速率方程的方法,给出了一个能够全面描述双包层掺染料聚合物光纤放大器增益性能的模型,模型既考虑了染料三重态能级对速率方程的影响,又考虑了双包层结构对泵浦光的影响,可以在稳态的情况下计算放大器的各种增益性能指标. 相似文献
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We report operation of an all-fiber degenerate optical parametric oscillator that employs a nonlinear-fiber Sagnac interferometer as a parametric amplifier. Synchronous pumping with 3.9-ps pulses at 1544 nm yields 0.83-ps output pulses. The wide bandwidth of the fiber parametric amplifier causes the oscillator to act as a pulse compressor. The output signal pulses exhibit improved spectral symmetry and a reduced time-bandwidth product compared with the pump pulses. Currently, the net group-velocity dispersion in the passive section of the fiber cavity limits the signal-pulse bandwidth and hence the minimum-obtainable pulse width. This experiment suggests the possibility of frequency conversion by operation of a similar pulsed parametric oscillator away from degeneracy. 相似文献
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We report an all-fiber pulsed laser with multistage fiber amplifier which was suitable for high power eye-safe free space
optical communications. Tapered structure has been utilized between booster and final amplifiers, which could increase the
power coupling from the former fiber into the core of the latter fiber, and the beam quality of the output laser could be
improved simultaneously. A maximum output power over 6 W has been achieved from the master-oscillator-power-amplifier system.
With the multi-stage configuration and forward pumping, the optical signal to noise ratio was measured to be better than 50
dB. 相似文献
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We report a single frequency laser source consisting of a Tm:YAP coupled-cavity master-oscillator and a Tm-doped fiber power
amplifier. The MOFPA yielded 4.55 W of single frequency output at 1990 nm when the input signal was 270 mW and the pumping
power was 35.2 W. A strong amplification of spontaneous emission (ASE) was observed when higher pumping power was applied.
Therefore, the output power of the single frequency fiber power amplifier was limited by the input power of seed laser. 相似文献