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| 大芯径光纤整形飞秒激光脉冲空间分布的研究 | |
| 引用本文： | 王向林,侯洵,魏志义.大芯径光纤整形飞秒激光脉冲空间分布的研究[J].光子学报,2014,38(11):2738-2741. |
| 作者姓名： | 王向林 侯洵 魏志义 |
| 作者单位： | （1 西安交通大学 a.电子与信息工程学院,b.陕西省信息光子技术重点实验室,西安 710049） （2 中国科学院物理研究所光物理重点实验室, 北京 100190) |
| 摘 要： | 通过将1 kHz重复频率的飞秒放大激光脉冲耦合到大芯径（100 μm）阶跃光纤,在27 mm长的光纤中产生了环形空间光强分布,并在3 160 mm的长光纤中观察到平台型的空间光强分布,通过自聚焦效应对该现象进行了解释.结果表明,通过选择合适的光纤,可以实现对放大飞秒激光脉冲的有效空间整形,从而达到改善光束质量的效果. |
| 关 键 词： | 飞秒激光 大芯径光纤 光束空间整形 自聚焦 |
| 收稿时间： | 2008-10-30 |
Spatial Shaping of Femtosecond Laser Pulse in Large-core Optical Fiber |
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| WANG Xiang-lin,HOU Xun,WEI Zhi-yi.Spatial Shaping of Femtosecond Laser Pulse in Large-core Optical Fiber[J].Acta Photonica Sinica,2014,38(11):2738-2741. | |
| Authors: | WANG Xiang-lin HOU Xun WEI Zhi-yi |
| Institution: | (1 a. School of Electronic and Information Engineering|b.Key Laboratory of Photonics Technology for Information,Xi′an Jiaotong University,Xi′an 710049,China) （2 Laboratory of Optical Physics,Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China) |
| Abstract: | The experimental research on spatial shaping by injecting the amplified femtosecond laser pulse at the repetition rate of 1 kHz into a step fiber with core diameter of 100 μm is reported.Beam profiles with ring and tap-top distributions are observed in the fibers with length in 27 mm and 3 160 mm,respectively,which are explained by the self-focusing effect.A method is introduced to shape the beam profile of femtosecond amplified laser pulse by choice suitable fiber,therefore it can be used to improve the beam quality. |
| Keywords: | Femtosecond laser Large-core optical fiber Spatial shaping Self-focusing |
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