Gamma-Ray Flash Generation in Irradiating Thin Foil Target by Single Cycle Tightly Focused Extreme Power Laser Pulse

Abstract

We present a regime where an ultra-intense laser pulse interacting with a foil target results in high $\gamma$-photon conversion efficiency, obtained via three-dimensional quantum-electrodynamics particle-in-cell simulations. A single-cycle laser pulse is used under the tight-focusing condition for obtaining the ${\lambda }^3$ regime. The simulations employ a radially polarized laser as it results in higher $\gamma$-photon conversion efficiency compared to both azimuthal and linear polarizations. A significant fraction of the laser energy is transferred to positrons, while a part of the electromagnetic wave escapes the target as attosecond single-cycle pulses.

arXiv comment6 pages, 5 figures

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Cited by in corpus (6)

• Towards Bright Gamma-Ray Flash Generation From Tailored Target Irradiated by Multi-Petawatt Laser
• Gamma-Flash Generation in Multi-Petawatt Laser-Matter Interactions
• Gamma-Ray Flash in the Interaction of a Tightly Focused Single-Cycle Ultraintense Laser Pulse with a Solid Target
• Attosecond gamma-ray flashes and electron-positron pairs in dyadic laser interaction with micro-wire
• Collimated $\gamma$-flash emission along the target surface irradiated by a laser at non-grazing incidence
• Ambient air plasma acceleration in tightly-focused ultrashort infrared laser beams