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学者姓名：李平雪
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摘要 ：
Using thulium-doped fiber laser to pump fluoride fiber is one of the most common methods to generate mid- infrared supercontinuum (SC). But it is difficult to generate SC spectrum with wavelength more than 4 mu m by directly pumping short fluoride fiber with 2 mu m picosecond (ps) laser. Although some studies with SC exceeding 4 mu m have also been reported, the proportion of spectral power in the long-wavelength region is not very high. To address this issue, a novel and simple approach to solve low peak power of 2 mu m ps pump sources is introduced by adding a short piece of holmium-doped fiber. This method can make full use of the gain bandwidth of Ho3+ and soliton self-frequency shift effect to enhance soliton energy and promote spectral broadening. The effectiveness of the approach is verified by constructing a theoretical model to solve the generalized nonlinear Schrodinger equation. We demonstrate through simulations that addition of holmium-doped fiber can yield significantly improved output spectral range, power ratio in the long-wavelength region and optical-optical conversion efficiency compared to the previous technical. Especially, the implementation of the new technology can effectively expand the SC long-wavelength edge by similar to 470 nm after applying a 3 dB gain, and can easily build a simple, compact and low-cost mid-infrared light source system.
关键词 ：
Mid-infrared Mid-infrared Supercontinuum generation Supercontinuum generation Fiber amplifier Fiber amplifier Holmium-doped fiber Holmium-doped fiber
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| GB/T 7714 | Wang, Xuan , Yao, Chuanfei , Yang, Linjing et al. Novel effective spectrum broadening technology pumped by 2 μm picosecond laser for mid-infrared supercontinuum generation [J]. | INFRARED PHYSICS & TECHNOLOGY , 2024 , 139 . |
| MLA | Wang, Xuan et al. "Novel effective spectrum broadening technology pumped by 2 μm picosecond laser for mid-infrared supercontinuum generation" . | INFRARED PHYSICS & TECHNOLOGY 139 (2024) . |
| APA | Wang, Xuan , Yao, Chuanfei , Yang, Linjing , Ren, Guochuan , Xu, Zipeng , Li, Pingxue . Novel effective spectrum broadening technology pumped by 2 μm picosecond laser for mid-infrared supercontinuum generation . | INFRARED PHYSICS & TECHNOLOGY , 2024 , 139 . |
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摘要 ：
We report high-power pedestal-free ultrashort pulses in a cascade compression system. In the self-compression stage, the 2 mu m ultrashort pulses with 123 fs duration and up to 21.7 W output power were obtained in a 0.3 m 50 mu m core diameter fiber. It is the highest self-compressing power ever obtained in a silica fiber with an all-fiber 2 mu m laser amplifier as the pump source. To obtain purer pedestal- eliminated pulses, we further increase the fiber length to 1 m to trigger the soliton self-frequency shifting (SSFS) effect. By employing an enhanced SSFS technique based on third- order dispersion (TOD) and filtering out the unshifted signal light, we finally achieved sub-150 fs, 10W-class, 1.2-MW peak-power, pedestal-free 2.07 mu m ultrashort pulses. This is also the highest, to the best of our knowledge, power and energy of Raman soliton obtained by SSFS in an ordinary silica fiber. (c) 2024 Optica Publishing Group
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| GB/T 7714 | Yang, Linjing , Yao, Chuanfei , Wang, Xuan et al. Generation of sub-150 fs, 10W-class, pedestal-free 2.07 μm ultrashort pulses using a cascade compression system [J]. | OPTICS LETTERS , 2024 , 49 (13) : 3576-3579 . |
| MLA | Yang, Linjing et al. "Generation of sub-150 fs, 10W-class, pedestal-free 2.07 μm ultrashort pulses using a cascade compression system" . | OPTICS LETTERS 49 . 13 (2024) : 3576-3579 . |
| APA | Yang, Linjing , Yao, Chuanfei , Wang, Xuan , Xu, Zipeng , Ren, Guochuan , Li, Kaihang et al. Generation of sub-150 fs, 10W-class, pedestal-free 2.07 μm ultrashort pulses using a cascade compression system . | OPTICS LETTERS , 2024 , 49 (13) , 3576-3579 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
We report the generation of MW-class tunable Raman soli- tons of 3.3-3.8 mu m in a fluorotellurite fiber. The pump source of the mid-infrared fiber is a 2.15-2.3 mu m Raman soliton source which has the highest peak-power Raman soliton (3.8 MW) ever achieved in a silica fiber. Fluorotellurite fiber is characterized by its short length and high nonlinearity, preventing the Raman soliton pulse broadening that occurs with fiber dispersion. The Raman soliton shifted to 3.8 mu m while still maintaining an ultra-narrow pulse width of 70.4 fs with 1.36 W output power and 1.17 MW peak power. To the best of our knowledge, this is the highest peak-power Raman soliton obtained in a mid-infrared fiber. (c) 2024 Optica Publishing Group. All rights, including for text and data mining (TDM), Artificial Intelligence (AI) training, and similar technologies, are reserved.
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| GB/T 7714 | Yang, Linjing , Yao, Chuanfei , Wang, Xuan et al. Generation of a MW-class tunable Raman soliton up to 3.8 μm in a fluorotellurite fiber [J]. | OPTICS LETTERS , 2024 , 49 (21) : 6137-6140 . |
| MLA | Yang, Linjing et al. "Generation of a MW-class tunable Raman soliton up to 3.8 μm in a fluorotellurite fiber" . | OPTICS LETTERS 49 . 21 (2024) : 6137-6140 . |
| APA | Yang, Linjing , Yao, Chuanfei , Wang, Xuan , Meng, Xianghao , Ren, Guochuan , Pu, Luyao et al. Generation of a MW-class tunable Raman soliton up to 3.8 μm in a fluorotellurite fiber . | OPTICS LETTERS , 2024 , 49 (21) , 6137-6140 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
We demonstrate tunable high-power, high-energy Raman solitons with the range of 1.9-2.3 mu m in large mode area (LMA) fibers and an optimized fundamental-mode matching technique for coupling LMA silica fibers. Finally, we obtained Raman solitons with a maximum output power of 5.8 W and a maximum pulse energy of 105 nJ in a LMA passive fiber with 32 mu m core diameter, the tuning range of Raman soliton is 1.96-2.35 mu m. In addition, we obtained Raman solitons with a maximum output power of 7.3 W and a maximum pulse energy of 126 nJ in a LMA passive fiber with 48 mu m core diameter, the tuning range of Raman soliton is 1.96-2.27 mu m. The output power of 7.3 W is the highest Raman soliton power currently available in silica fibers, and the result fills a gap in the generation of both high-power and high-energy Raman solitons in a LMA silica fiber.
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| GB/T 7714 | Yang, Linjing , Wang, Xuan , Yao, Chuanfei et al. High-power tunable Raman soliton generation in large core diameter passive fibers via a precise fundamental-mode matching technique [J]. | OPTICS EXPRESS , 2024 , 32 (3) : 4036-4049 . |
| MLA | Yang, Linjing et al. "High-power tunable Raman soliton generation in large core diameter passive fibers via a precise fundamental-mode matching technique" . | OPTICS EXPRESS 32 . 3 (2024) : 4036-4049 . |
| APA | Yang, Linjing , Wang, Xuan , Yao, Chuanfei , Xu, Zipeng , Ren, Guochuan , Li, Kaihang et al. High-power tunable Raman soliton generation in large core diameter passive fibers via a precise fundamental-mode matching technique . | OPTICS EXPRESS , 2024 , 32 (3) , 4036-4049 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
双包层氟化物增益光纤及其制备方法，具有低损耗、高泵浦吸收效率。这种双包层氟化物增益光纤，其包括：纤芯(12)、D型内包层(13)、外包层(14)和聚合物涂覆层(15)，所述纤芯、内包层和外包层均为氟化物玻璃材料，所述聚合物涂覆层为氟化乙烯丙烯共聚物。纤芯、内包层结构采用吸注法制备，并将内包层抛磨为D型结构，外包层采用插芯浇筑法制备，形成D型双包层氟化物光纤预制棒，并拉制成光纤。
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| GB/T 7714 | 李平雪 , 姚传飞 , 任国川 et al. 双包层氟化物增益光纤及其制备方法 : CN202311069110.9[P]. | 2023-08-24 . |
| MLA | 李平雪 et al. "双包层氟化物增益光纤及其制备方法" : CN202311069110.9. | 2023-08-24 . |
| APA | 李平雪 , 姚传飞 , 任国川 , 李凯航 . 双包层氟化物增益光纤及其制备方法 : CN202311069110.9. | 2023-08-24 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
2微米全光纤激光器泵浦的中红外光参量振荡器，结构简单，易于封装，可直接作为光学参量振荡器的泵浦源，减小中红外激光系统体积，提升中红外激光系统的稳定性和光束质量，实现纳秒脉冲激光输出，重频和脉宽灵活可调，使得3~5µm磷锗锌中红外光学参量振荡器也具备重频和脉冲可调的特性。包括沿光束传播方向依次设置的2µm光纤激光种子源Ⅰ、光纤放大器Ⅱ和磷锗锌光学参量振荡器Ⅲ，2µm光纤激光种子源Ⅰ为保偏铥钬共掺光纤激光器，包括半导体激光器和单模增益光纤及配合使用的保偏单模光纤器件；光纤放大器Ⅱ包括两级预放大和一级大模场光纤放大器；磷锗锌光学参量振荡器Ⅲ包括耦合透镜、偏振旋转系统、磷锗锌晶体和配合使用的二向色镜。
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| GB/T 7714 | 李平雪 , 谢鑫鑫 , 王云朋 et al. 2微米全光纤激光器泵浦的中红外光参量振荡器 : CN202310368902.X[P]. | 2023-04-10 . |
| MLA | 李平雪 et al. "2微米全光纤激光器泵浦的中红外光参量振荡器" : CN202310368902.X. | 2023-04-10 . |
| APA | 李平雪 , 谢鑫鑫 , 王云朋 , 姚传飞 . 2微米全光纤激光器泵浦的中红外光参量振荡器 : CN202310368902.X. | 2023-04-10 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
基于掩模法刻写2微米大模场光纤光栅的系统及工作方法，克服传统紫外纳秒激光和近红外飞秒激光刻写的缺陷，解决刻写易擦除和对光纤损耗大的缺点，获得紫外波段飞秒激光光源，实现高精度、低阶次的光纤布拉格光栅刻写，优化刻写光路，提高相位掩模板的利用率而大大降低成本。飞秒激光光源输出的飞秒激光穿过半波片和格兰棱镜，通过旋转半波片调整飞秒激光输出功率，随后进入倍频单元，经反射镜反射到聚焦柱面镜和掩模板上，掩模板固定在电动位移台上实现光斑的扫描刻写；光纤环形器输入端连接放大自发辐射光源，光纤环形器反射端连接待刻光纤的一端，光纤环形器输出端连接反射端监测装置，待刻光纤的另一端连接透射端监测装置。
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| GB/T 7714 | 李平雪 , 许杨涛 , 孟祥昊 et al. 基于掩模法刻写2微米大模场光纤光栅的系统及工作方法 : CN202310319024.2[P]. | 2023-03-29 . |
| MLA | 李平雪 et al. "基于掩模法刻写2微米大模场光纤光栅的系统及工作方法" : CN202310319024.2. | 2023-03-29 . |
| APA | 李平雪 , 许杨涛 , 孟祥昊 , 王思文 . 基于掩模法刻写2微米大模场光纤光栅的系统及工作方法 : CN202310319024.2. | 2023-03-29 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
基于窄线宽、大梳齿间隔光频梳的信道化接收机产生系统，不包含空间器件和大量的电学器件，实现微波信号高动态范围、瞬时大带宽、多波段同时接收。其包括：电光调制光频梳产生及性能优化模块、超窄线宽相干泵浦光产生模块、大梳齿间隔宽带光频梳产生模块、微波信号接收与处理模块。
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| GB/T 7714 | 李平雪 , 朱飞宇 , 姚传飞 . 基于窄线宽、大梳齿间隔光频梳的信道化接收机产生系统 : CN202310443204.1[P]. | 2023-04-24 . |
| MLA | 李平雪 et al. "基于窄线宽、大梳齿间隔光频梳的信道化接收机产生系统" : CN202310443204.1. | 2023-04-24 . |
| APA | 李平雪 , 朱飞宇 , 姚传飞 . 基于窄线宽、大梳齿间隔光频梳的信道化接收机产生系统 : CN202310443204.1. | 2023-04-24 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
一种全光纤结构的中红外锁模激光振荡器，能够适配于氟化物玻璃光纤的工艺技术手段，高质量地实现了中红外锁模激光振荡器的全纤化，在保持锁模激光输出质量的前提下，大大提升了系统的稳定性与集成性。包括：信号光纤(1)、中红外光纤合束器(2)、泵浦模块(3)、耦合输出镜(4)、可饱和吸收体(5)、中红外啁啾布拉格光纤光栅(6)。
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| GB/T 7714 | 李平雪 , 王超 , 姚传飞 . 一种全光纤结构的中红外锁模激光振荡器 : CN202310424987.9[P]. | 2023-04-20 . |
| MLA | 李平雪 et al. "一种全光纤结构的中红外锁模激光振荡器" : CN202310424987.9. | 2023-04-20 . |
| APA | 李平雪 , 王超 , 姚传飞 . 一种全光纤结构的中红外锁模激光振荡器 : CN202310424987.9. | 2023-04-20 . |
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摘要 ：
In this work, a multiband microwave waveforms transmitting system was demonstrated based on all-optical dual fiber combs. Two optical fiber frequency combs via cascaded four waves mixing process ensure the coherence of the system by sharing the pump light. The high-speed frequency tuning of the pump laser will be transferred to each newly generated comb line through the nonlinear effect in the fiber. The comb pairs of the same order obtained through filtering transform the frequency chirp in the optical domain to the frequency chirp in the electrical domain after being beat on the PD. By changing the parameters of the control signal, the center frequency, bandwidth, PRF and envelope of the multi band microwave signal can be flexibly reconfigurable. Thanks to the coherence of dual optical frequency combs, microwave signals all show excellent line-type, high signal to noise ratio and no burrs. As a result, the chirped microwave signals of triangle wave, sine wave and sawtooth wave types are obtained at the repetition rate of 500 Hz. Overall, multi-band chirped microwave generation system based on all-optical system provides a practical device for transmitting and receiving multi band radar.
关键词 ：
dual optical frequency comb dual optical frequency comb microwave photonics microwave photonics four wave mixing process four wave mixing process
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| GB/T 7714 | Xiong, Wenhao , Yao, Chuanfei , Li, Pingxue et al. Multiband microwave waveforms transmitting system using dual fiber combs [J]. | SPIE-CLP CONFERENCE ON ADVANCED PHOTONICS 2022 , 2023 , 12601 . |
| MLA | Xiong, Wenhao et al. "Multiband microwave waveforms transmitting system using dual fiber combs" . | SPIE-CLP CONFERENCE ON ADVANCED PHOTONICS 2022 12601 (2023) . |
| APA | Xiong, Wenhao , Yao, Chuanfei , Li, Pingxue , Zhu, Feiyu , Lei, Ruonan . Multiband microwave waveforms transmitting system using dual fiber combs . | SPIE-CLP CONFERENCE ON ADVANCED PHOTONICS 2022 , 2023 , 12601 . |
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