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Enhancement of laser-focused intensity greater than 10 times through a re-entrant cone in the petawatt regime

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Abstract

A versatile method to enhance the laser pulse intensity by one order of magnitude from $8 \times {10^{20}}\;{\rm W/cm}^2$ using a single plastic micro-cone target is proposed in this Letter. We found an increase of the initial laser pulse intensity by more than 10 times for a micro-cone tip diameter of 5 µm upon performing two-dimensional particle-in-cell simulations. Numerical simulations of the spatio-temporal electromagnetic field distribution are used to replicate similar dependence of the maximum laser intensity to the cone tip diameter.

© 2020 Optical Society of America

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