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学者姓名：宋晏蓉
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摘要 ：
超快光纤激光是目前激光器研究的一个热点。非线性可饱和吸收效应是光纤激光器被动锁模技术的核心。被动锁模技术主要分为真实饱和吸收体和人造饱和吸收体,真实可饱和吸收体包括:半导体可饱和吸收镜(SESAM)和纳米材料等;人造可饱和吸收体包括:非线性偏振旋转演化(NPE)、非线性光环形镜(NOLM)、非线性多模干涉(NLMMI)和Mamyshev再生器(Mamyshev)等。本文综述了最近各类可饱和吸收效应锁模光纤激光器的发展方向,简要阐明工作原理、技术优势、解决所面临问题的方法以及应用领域。
关键词 ：
超快光纤激光 超快光纤激光 可饱和吸收效应 可饱和吸收效应 饱和吸收体 饱和吸收体 激光光学 激光光学
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| GB/T 7714 | 董自凯 , 宋晏蓉 . 光纤激光器被动锁模技术研究进展 [J]. | 中国激光 , 2021 , (05) : 98-113 . |
| MLA | 董自凯 等. "光纤激光器被动锁模技术研究进展" . | 中国激光 05 (2021) : 98-113 . |
| APA | 董自凯 , 宋晏蓉 . 光纤激光器被动锁模技术研究进展 . | 中国激光 , 2021 , (05) , 98-113 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
1024 nm波长的脉冲激光在角分辨光电子能谱测量等领域有着不可或缺的用处,因此采用基于非线性偏振旋转(NPR)锁模的全正色散掺镱光纤激光器作为种子源,搭建了包含光纤可调滤波器的主振荡功率放大系统,实现了1024 nm激光放大输出。理论上基于金斯伯格-朗道方程模拟了NPR锁模的耗散孤子脉冲演化过程,实验上获得了耗散孤子脉冲输出,并且研究了锁模脉冲的建立过程,将其与理论仿真结果相比,结果基本吻合。通过可调滤波器对种子光进行滤波,并进行预放大及放大实验,当放大级泵浦功率为5 W时,得到中心波长为1024 nm、平均功率为1.1 W、脉冲能量为51 nJ、重复频率为21.5 MHz、信噪比为67.5...
关键词 ：
光纤激光器 光纤激光器 激光器 激光器 激光放大器 激光放大器 耗散孤子 耗散孤子 锁模激光器 锁模激光器 非线性偏振旋转 非线性偏振旋转
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| GB/T 7714 | 崔友硕 , 张璐璐 , 殷杰 et al. 基于光纤可调滤波器的1024 nm锁模脉冲产生与放大研究 [J]. | 中国激光 , 2021 , (05) : 240-248 . |
| MLA | 崔友硕 et al. "基于光纤可调滤波器的1024 nm锁模脉冲产生与放大研究" . | 中国激光 05 (2021) : 240-248 . |
| APA | 崔友硕 , 张璐璐 , 殷杰 , 董自凯 , 华玲玲 , 田金荣 et al. 基于光纤可调滤波器的1024 nm锁模脉冲产生与放大研究 . | 中国激光 , 2021 , (05) , 240-248 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
Vertical external cavity surface-emitting lasers (VECSELs) have unique properties such as excellent beam quality, high average output power, and high repetition rate. Short pulses from VECSELs, especially picosecond and femtosecond, can be achieved by a passive mode-locking mechanism with a semiconductor saturable absorber mirror (SESAM). We theoretically simulate the pulse evolution dynamics in VECSELs and investigate the influences of different parameters of gain and SESAM on pulse characteristics. To the best of our knowledge, this is the first time that the influences of fast recovery time and two-photon absorption coefficient on pulse characteristics have been studied. © 2021 Optical Society of America
关键词 ：
Passive mode locking Passive mode locking Semiconductor saturable absorber mirrors Semiconductor saturable absorber mirrors Surface emitting lasers Surface emitting lasers Two photon processes Two photon processes Ultrafast lasers Ultrafast lasers
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| GB/T 7714 | Zhang, Yiwei , Hua, Lingling , Zhuang, Bihui et al. Simulation of the influence of gain and SESAM on characteristics of mode-locked VECSELs [J]. | Applied Optics , 2021 , 60 (9) : 2537-2542 . |
| MLA | Zhang, Yiwei et al. "Simulation of the influence of gain and SESAM on characteristics of mode-locked VECSELs" . | Applied Optics 60 . 9 (2021) : 2537-2542 . |
| APA | Zhang, Yiwei , Hua, Lingling , Zhuang, Bihui , Tian, Jinrong , Song, Yanrong . Simulation of the influence of gain and SESAM on characteristics of mode-locked VECSELs . | Applied Optics , 2021 , 60 (9) , 2537-2542 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
The evolutions of conventional soliton (CS) and breathing soliton (BS) dynamics in an anomalous dispersion Er-doped fiber laser are investigated experimentally and numerically. Based on the dispersive Fourier transform technique, the evolution processes of CS buildup and extinction are observed and discussed. It was found that a transitional unstable stage exists during the buildup and extinction process. In the same laser, BS state is also reached. Simulation results of CS and BS evolutionary dynamics are anastomotic with experimental results. The results may contribute to better understanding of the complex pulse dynamics in ultrafast fiber lasers.
关键词 ：
mode-locked fiber laser mode-locked fiber laser pulse propagation and temporal solitons pulse propagation and temporal solitons ultrafast phenomena ultrafast phenomena
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| GB/T 7714 | Cui, You-Shuo , Dong, Zi-Kai , Zhang, Lu-Lu et al. Spatio-temporal dynamics of conventional soliton and breathing soliton in an anomalous dispersion fiber laser [J]. | LASER PHYSICS LETTERS , 2021 , 18 (8) . |
| MLA | Cui, You-Shuo et al. "Spatio-temporal dynamics of conventional soliton and breathing soliton in an anomalous dispersion fiber laser" . | LASER PHYSICS LETTERS 18 . 8 (2021) . |
| APA | Cui, You-Shuo , Dong, Zi-Kai , Zhang, Lu-Lu , Tian, Jin-Rong , Song, Yan-Rong . Spatio-temporal dynamics of conventional soliton and breathing soliton in an anomalous dispersion fiber laser . | LASER PHYSICS LETTERS , 2021 , 18 (8) . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
本文基于非线性光环形镜锁模的掺铒光纤激光器,通过调节偏振控制器,实现了输出锁模脉冲类型可调.本文给出了三种调谐状态:传统孤子锁模脉冲输出,脉冲宽度1.16 ps;双峰结构光谱的脉冲输出,双峰位于1 555 nm和1 575 nm两个波段附近,且通过调节偏振控制器的偏振角度,在光谱中心波长附近可微调;实现了类噪声锁模脉冲输出,当泵浦功率400 mW时,类噪声脉冲重复频率为3.73 MHz,脉冲能量3.47 nJ,脉冲的基底宽度为129 ps,脉冲尖端宽度为0.86 ps.对不同应用领域给出了灵活的选择途径.
关键词 ：
双折射滤波 双折射滤波 ''8''字形腔 ''8''字形腔 孤子锁模 孤子锁模 类噪声 类噪声 非线性光环形镜 非线性光环形镜
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| GB/T 7714 | 梁金华 , 宋晏蓉 , 田金荣 et al. 脉冲类型可调的锁模光纤激光器 [J]. | 量子光学学报 , 2020 , 26 (2) : 210-216 . |
| MLA | 梁金华 et al. "脉冲类型可调的锁模光纤激光器" . | 量子光学学报 26 . 2 (2020) : 210-216 . |
| APA | 梁金华 , 宋晏蓉 , 田金荣 , 郑煜 . 脉冲类型可调的锁模光纤激光器 . | 量子光学学报 , 2020 , 26 (2) , 210-216 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
Passively mode-locked optically pumped vertical external cavity surface-emitting lasers ( OP-VECSELs) have unique properties, such as excellent beam quality, high-average output power and high repetition rate. Many applications, including frequency comb and supercontinuum, require pulses in the femtosecond regime. A numerical model in the femtosecond regime is essential to understand the pulse formation mechanism. In this paper, we present a numerical model of passively mode-locked VECSELs in the femtosecond regime. We analyze the influence of gain parameters, such as small-signal gain, saturation energy, and the gain bandwidth on the pulse characteristics. The results of the simulation can provide a direction for designing the gain chip.
关键词 ：
passively mode-locked passively mode-locked VECSELs VECSELs pulse dynamics pulse dynamics simulation simulation
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| GB/T 7714 | Zhang, Yiwei , Hua, Lingling , Zhuang, Bihui et al. Simulation of the influence of gain parameters on pulse formation process for VECSELs [C] . 2020 . |
| MLA | Zhang, Yiwei et al. "Simulation of the influence of gain parameters on pulse formation process for VECSELs" . (2020) . |
| APA | Zhang, Yiwei , Hua, Lingling , Zhuang, Bihui , Tian, Jinrong , Song, Yanrong . Simulation of the influence of gain parameters on pulse formation process for VECSELs . (2020) . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
We demonstrated the noise-like pulse (NLP) generation in an erbium (Er) doped fiber laser at 1560 nm based on 2H-MoTe2. The saturable absorber (SA) was a film mixed by 2H-MoTe2 and polyvinyl alcohol (PVA). The moudulation depth of the SA was 21.4% and the saturable optical intensity was 10.3 GW/cm(2). When the 2H-MoTe2 film was inserted into the cavity, the stable NLPs with 3-dB spectral bandwidth of 2.44 nm and the repetition rate of 33.7 MHz were obtained. The autocorrelation (AC) trace of NLP has a 1.14 ps spike and a 71 ps pedestal. When the pump power was 600 mW, the maximum output power was 26.09 mW. To the best of our knowledge, this is the first time to realize the generation of NLP mode locking in an Er-doped fiber laser based on 2H-MoTe2-PVA film.
关键词 ：
nonlinear optical materials nonlinear optical materials fiber lasers fiber lasers noise-like pulse noise-like pulse mode locking mode locking
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| GB/T 7714 | Cui, Youshuo , Dong, Zikai , Zhang, Lulu et al. 2H-MoTe2 based noise-like pulse erbium-doped fiber laser [C] . 2020 . |
| MLA | Cui, Youshuo et al. "2H-MoTe2 based noise-like pulse erbium-doped fiber laser" . (2020) . |
| APA | Cui, Youshuo , Dong, Zikai , Zhang, Lulu , Tian, Jinrong , Song, Yanrong . 2H-MoTe2 based noise-like pulse erbium-doped fiber laser . (2020) . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
A passively fast polarization switching erbium-doped fibre laser using quantum dot tungsten disulfide (QDWS(2)) as a saturable absorber (SA) has been proposed. It could generate polarization domain walls (PDWs). The PDWs' spectrum can be divided into two separated spectra, which are orthogonally polarized. In detail, the horizontal polarization component wavelength is centred at 1561.1 nm with a repetition rate of 19.347 MHz, a pulse duration of 30 ns, and a signal-to-noise ratio of 73.2 dB at the maximum pump power. The vertical polarization component wavelength is centred at 1561.5 nm, with a pulse duration of 20.4 ns. To the best of our knowledge, this is the first report of a polarization domain wall generated by a QDWS(2)-SA. These results provide a platform to investigate anticorrelated polarization dynamics in quasi-isotropic fibre lasers. Moreover, their robustness and attractive properties could find potential applications in optical communications, data storage, and fibre laser devices.
关键词 ：
fibre laser fibre laser polarization domain wall soliton polarization domain wall soliton saturable absorber saturable absorber
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| GB/T 7714 | Dong, Zikai , Cui, Youshuo , Li, Kexuan et al. Polarization domain wall solitons in a quasi-isotropic fibre laser using quantum dot tungsten disulfide [J]. | LASER PHYSICS , 2020 , 30 (5) . |
| MLA | Dong, Zikai et al. "Polarization domain wall solitons in a quasi-isotropic fibre laser using quantum dot tungsten disulfide" . | LASER PHYSICS 30 . 5 (2020) . |
| APA | Dong, Zikai , Cui, Youshuo , Li, Kexuan , Hua, Lingling , Zhang, Wenhai , Tian, Jinrong et al. Polarization domain wall solitons in a quasi-isotropic fibre laser using quantum dot tungsten disulfide . | LASER PHYSICS , 2020 , 30 (5) . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
Noise-like pulses having a pedestal of 690 fs and a spike of 59.6 fs were generated in a nonlinear Yb-doped fiber amplification system. The seed source is a mode-locked Yb-doped fiber laser by nonlinear polarization rotation, and dissipative soliton pulses were obtained in it. Then, the dissipative soliton pulses passed through a 7.6 m dispersive fiber to enhance the dispersion and nonlinearity. Further on, the dissipative soliton pulses were launched into a Yb-doped fiber nonlinear amplifier, and stable noise-like pulses with a pedestal of 6.26 ps and a spike of 227 fs were achieved. Finally, by a grating pair, the pedestal and spike of the noise-like pulses were effectively compressed to 690 fs and 59.6 fs, respectively. To the best of our knowledge, this is the shortest pedestal demonstrated in noise-like pulses operating at 1 mu m.
关键词 ：
amplifier amplifier compression compression fiber laser fiber laser noise-like pulse noise-like pulse
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| GB/T 7714 | Zhang, Zexin , Tian, Jinrong , Xu, Changxing et al. Noise-like pulse with a 690 fs pedestal generated from a nonlinear Yb-doped fiber amplification system [J]. | CHINESE OPTICS LETTERS , 2020 , 18 (12) . |
| MLA | Zhang, Zexin et al. "Noise-like pulse with a 690 fs pedestal generated from a nonlinear Yb-doped fiber amplification system" . | CHINESE OPTICS LETTERS 18 . 12 (2020) . |
| APA | Zhang, Zexin , Tian, Jinrong , Xu, Changxing , Xu, Runqin , Cui, Youshuo , Zhuang, Bihui et al. Noise-like pulse with a 690 fs pedestal generated from a nonlinear Yb-doped fiber amplification system . | CHINESE OPTICS LETTERS , 2020 , 18 (12) . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
Based on mathematic simulations, the impact of spectral filtering on pulse breaking up and noise-like pulse generation in all-normal-dispersion fiber lasers are investigated. Three types of spectrum filters arc employed in the simulations, which have a Gaussian-shaped profile, super-Gaussian-shaped profile, and sinusoidal-shaped profile, respectively. With the Gaussian-shaped filter, the pulse breaking-up process is discussed. The super-Gaussian-shaped filter and the sinusoidal-shaped filter have two different formation mechanisms for noise-like pulses and are revealed. In addition, with the sinusoidal-shaped filter, dissipative solitons of different central wavelengths are achieved. (C) 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
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| GB/T 7714 | Xu, Runqin , Xu, Fanjiang , Song, Yanrong et al. Impact of spectral filtering on pulse breaking-up and noise-like pulse generation in all-normal dispersion fiber lasers [J]. | OPTICS EXPRESS , 2020 , 28 (15) : 21348-21358 . |
| MLA | Xu, Runqin et al. "Impact of spectral filtering on pulse breaking-up and noise-like pulse generation in all-normal dispersion fiber lasers" . | OPTICS EXPRESS 28 . 15 (2020) : 21348-21358 . |
| APA | Xu, Runqin , Xu, Fanjiang , Song, Yanrong , Duan, Lei , Song, Yunbo , Tan, Shudan et al. Impact of spectral filtering on pulse breaking-up and noise-like pulse generation in all-normal dispersion fiber lasers . | OPTICS EXPRESS , 2020 , 28 (15) , 21348-21358 . |
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