Numerical investigation on characteristics of filamentation by intense femtosecond positive temporal Airy pulses

Qingwei Zeng; Lei Liu; Jingjing Ju; Shuai Hu

doi:10.1117/12.2564986

17 April 2020 Numerical investigation on characteristics of filamentation by intense femtosecond positive temporal Airy pulses

Qingwei Zeng, Lei Liu, Jingjing Ju, Shuai Hu

Author Affiliations +

Proceedings Volume 11455, Sixth Symposium on Novel Optoelectronic Detection Technology and Applications; 114554S (2020) https://doi.org/10.1117/12.2564986
Event: Sixth Symposium on Novel Photoelectronic Detection Technology and Application, 2019, Beijing, China

Abstract

We numerically investigated the nonlinear propagation of femtosecond positive temporal Airy pulses in air. Effects of background energy distribution of the laser pulses on the characteristics of filamentation are studied by changing the confinement parameter of the temporal Airy pulses. The simulation results indicate that the on-axis intensity and electron density increase with the confinement parameter decreases. More defocusing-refocusing cycles have been observed during the propagation of Airy pulses with smaller confinement parameter. More temporal distortions occur in the trailing edge of Airy pulses than Gaussian pulse. The temporal Airy pulses can form longer filament than the Gaussian pulse when fixing the initial intensity.

Citation Download Citation

Qingwei Zeng, Lei Liu, Jingjing Ju, and Shuai Hu "Numerical investigation on characteristics of filamentation by intense femtosecond positive temporal Airy pulses", Proc. SPIE 11455, Sixth Symposium on Novel Optoelectronic Detection Technology and Applications, 114554S (17 April 2020); https://doi.org/10.1117/12.2564986

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