Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7223589 | Optik - International Journal for Light and Electron Optics | 2018 | 6 Pages |
Abstract
We have numerically studied the femtosecond laser filamentation with various orders of Mathieu beam in air. Simulations show that for the case of zero-order Mathieu beam, the on-axis filament together with two side filaments are formed, whereas the first-order and second-order Mathieu beams can generate the on-axis filaments twice due to the diffraction-free property. Moreover, zero-order Mathieu beam enhances the supercontinuum (SC) generation in the visible and ultraviolet spectrum due to the coherent superposition of MFs, while the other two Mathieu beams enhance the long-wavelength region owing to the steep gradient of the back part of the pulse during propagation.
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Authors
Mingxin Zhang, Yuze Hu, Jinsong Nie,