2023
DOI: 10.48550/arxiv.2301.05423
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High-efficient harmonic vortex generation from a laser irradiated hollow-cone target

Abstract: It has been recently reported that ultraviolet harmonic vortices can be produced when a highpower circular-polarized laser pulse travels through a micro-scale waveguide. However, the harmonic generation quenches typically after a few tens of microns of propagation, due to the build-up of electrostatic potential that suppresses the amplitude of the surface wave. Here we propose to utilize a hollow-cone channel to overcome this obstacle. When traveling in a cone target, the laser intensity gradually increases, a… Show more

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