| 中红外超快光纤激光器研究进展 |
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| 引用本文： | 侯绍冬,闫培光,阮双琛.中红外超快光纤激光器研究进展[J].强激光与粒子束,2021,33(11):111005-1-111005-15. |
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| 作者姓名： | 侯绍冬 闫培光 阮双琛 |
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| 作者单位： | 1.深圳大学 物理与光电工程学院, 广东 深圳 518060 |
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| 基金项目： | 国家自然科学基金重点项目(61935014); 国家自然科学基金(61775146，61975136) |
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| 摘 要： | 中红外波段覆盖重要的分子吸收区与多个大气透射窗口，该波段的超快激光器在多个领域具有广泛应用。基于光纤的中红外超快激光器近年来在激光发射与传输、超快脉冲产生与应用等方面发展迅速，为中红外波段超快激光开辟了新的研究手段与应用领域。综述了近十年来中红外超快光纤激光器的发展概况，介绍了近年来中红外波段的激光传输与增益手段。其中，重点回顾了近年来中红外超快脉冲产生技术的研究进展及其代表性工作，包括非线性偏振旋转、可饱和吸收体以及频移反馈锁模技术。此外，还介绍了中红外超快脉冲的压缩放大技术与超连续谱产生应用。最后讨论并总结了中红外超快光纤激光器面临的挑战与可能的发展方向。
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| 关 键 词： | 中红外 超快激光器 光纤激光器 锁模技术 少周期脉冲 超连续谱 |
| 收稿时间： | 2021-07-26 |
Recent advances in mid-infrared ultrafast fiber laser technology |
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| Affiliation: | 1.College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China2.College of New Materials and New Energies, Shenzhen Technology University, Shenzhen 518118, China |
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| Abstract: | Mid-infrared region ranging from 2.5 μm to 25 μm covers absorption lines of most molecules and multiple atmospheric windows. The ultrafast lasers operating in this waveband have vast applications in many fields. In recent years, significant progress has been made in the area of mid-infrared fiber-based ultrafast lasers in terms of long waveband emission and ultrafast pulse generation, which enables many unexplored reseaches and novel applications. In this paper, we reviewed the development of mid-infrared ultrafast fiber lasers over the last decade. Starting with the fiber materials and the gain medium used for mid-infrared emission, we focused on the current mode-locking methods and their representative progress for mid-infrared fiber lasers including nonlinear polarization rotation, saturable absorbers and frequency shifted feedback technique. Then we briefly discussed the mid-infrared pulse post-modification and typical applications including few-circle pulses and supercontinuum generation. Finally, the critical challenges the mid-infrared ultrafast fiber lasers are currently facing and the possible routines for further development were summarized. |
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