AI Article Synopsis
- - The study introduces a method for creating an array of filaments with orthogonal polarizations in air using specially designed wedge-type birefringent quartz plates.
- - The number of filaments generated (N) is determined by the number of quartz plates used in the laser path, with the formula N = 2n.
- - By adjusting the orientation of the quartz plates, the filaments can be separated into two parts with perpendicular polarization, and the distance between these filaments is influenced by the focal length of the focusing lens.
Article Abstract
We demonstrate the generation of filament array with orthogonal polarizations in air by using specifically designed wedge-type birefringent quartz plates. Experimental results show that the number of the generated filaments can be expressed as N = 2n wherenis the number of quartz plates inserted in the laser propagation path. By manipulating the optic axis of the quartz plates with respect to the polarization direction of the input laser pulse, the generated filaments can be separated into two parts with the polarization directions perpendicular with each other. The separation distance between the adjacent filaments is found to be linearly dependent on the focal length of external focusing lens. Our results provide a simple and efficient way to generate regular and reproductive femtosecond filament array in air.
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| http://dx.doi.org/10.1364/OE.26.008515 | DOI Listing |
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