Contributions of leading and tailing pulse edges to filamentation and supercontinuum generation of femtosecond pulses in air
Contributions of leading and tailing pulse edges to filamentation and supercontinuum generation of femtosecond pulses in air
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前缘和后缘脉冲边缘对空气中飞秒脉冲的丝状化和超连续谱产生的贡献
DOI：
10.1063/1.5045783
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发表时间：
2018-10
影响因子：
2.2
通讯作者：
Zuoqiang Hao
中科院分区：
文献类型：
--
作者：
Lindi Zhan;Mengning Xu;Tingting Xi;Zuoqiang Hao
通过模拟平顶、不同陡度前沿和尾沿的飞秒激光脉冲在空气中的传播，分析了脉冲边缘对传播动力学和超连续谱产生的影响。结果表明，前缘的大小决定了前缘的弯曲长度。进一步揭示了脉冲边沿在SC产生中的不同作用。在较低的激光功率下，激光脉冲的光谱展宽主要来源于克尔效应引起的脉冲两侧边缘的自相位调制，而在较高的功率下，前缘在蓝色中起主导作用，通过模拟平顶、不同陡度前沿和尾沿的飞秒激光脉冲在空气中，分析了脉冲边沿对双折射动力学和超连续谱产生的影响。结果表明，前缘的大小决定了前缘的弯曲长度。进一步揭示了脉冲边沿在SC产生中的不同作用。在较低的激光功率下，激光脉冲的光谱展宽主要来自于克尔效应引起的脉冲两侧边缘的自相位调制，而在较高的激光功率下，由于电子的产生，激光脉冲的前沿在SC的蓝边扩展中起主导作用。
By simulating the filamentation of femtosecond laser pulses with flat top and different steep leading and tailing edges in air, the influence of pulse edges on the filamentation dynamics and supercontinuum (SC) generation is analyzed. It is found that the filamentation length is determined by the leading edge. The different roles of the pulse edges in the SC generation are further revealed. Under a relative lower laser power, the spectral broadening of the laser pulse originates mainly from the self-phase modulation of both pulse edges induced by the Kerr effect, while under a relative higher power condition, the leading edge plays a dominant role in the blue-side extension of the SC due to electron generation.By simulating the filamentation of femtosecond laser pulses with flat top and different steep leading and tailing edges in air, the influence of pulse edges on the filamentation dynamics and supercontinuum (SC) generation is analyzed. It is found that the filamentation length is determined by the leading edge. The different roles of the pulse edges in the SC generation are further revealed. Under a relative lower laser power, the spectral broadening of the laser pulse originates mainly from the self-phase modulation of both pulse edges induced by the Kerr effect, while under a relative higher power condition, the leading edge plays a dominant role in the blue-side extension of the SC due to electron generation.
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影响因子：
16.6
作者：
Panagiotopoulos, P.;Papazoglou, D. G.;Tzortzakis, S.
通讯作者：
Tzortzakis, S.
影响因子：
4
作者：
R. Ackermann;E. Salmon;N. Lascoux;J. Kasparian;P. Rohwetter;K. Stelmaszczyk;Shaohui Li;A. Lindinger-A.-Lindi
通讯作者：
R. Ackermann;E. Salmon;N. Lascoux;J. Kasparian;P. Rohwetter;K. Stelmaszczyk;Shaohui Li;A. Lindinger-A.-Lindi
影响因子：
3.8
作者：
Zuofei Hong;Qingbin Zhang;S. Ali Rezvani;P. Lan;P. Lu
通讯作者：
Zuofei Hong;Qingbin Zhang;S. Ali Rezvani;P. Lan;P. Lu
影响因子：
3.8
作者：
Demmler, Stefan;Rothhardt, Jan;Tuennermann, Andreas
通讯作者：
Tuennermann, Andreas
影响因子：
3.6
作者：
A. Camino;Z. Hao;X. Liu;Jingquan Lin
通讯作者：
A. Camino;Z. Hao;X. Liu;Jingquan Lin