Supercontinuum Generation in Holey Microstructure Fibres with Random Cladding Distribution by Femtosecond Laser Pulses * |
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引用本文: | 李曙光,侯蓝田,冀玉领,周桂耀.Supercontinuum Generation in Holey Microstructure Fibres with Random Cladding Distribution by Femtosecond Laser Pulses *[J].中国物理快报,2003,20(8):1300-1302. |
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作者姓名: | 李曙光 侯蓝田 冀玉领 周桂耀 |
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作者单位: | InstituteofInfraredOpticalFibresandSensors,YanshanUniversity,Qinhuangdao066004 |
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摘 要: | It is reported that supercontinuum spectrum from 440 to 1050 nm can be generated in holey microstructure fibres (HMFs) with random cladding distribution by Ti:sapphire femtosecond laser pulses with central wavelength of 800 nm. Based on the method of the effective refractive index and the analogy of step-index fibre, we have calculated the effective mode area and the group velocity dispersion (GVD). It is found that the HMFs have specifically ability of localizing light and controlling GVD. The mechanism of supercontinuum generation in the HMFs with random cladding distribution is that the balance between the GVD and the self-phase modulation in the anomalous dispersion region leads to formation of solitons and fission of high order solitons.
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关 键 词: | 超连续产生 飞秒激光脉冲 微观结构 有孔光纤 随机覆层分布 HMF |
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