Lighting up the Christmas tree: high-intensity laser interactions with a nano-structured target

TL;DR

This study uses numerical simulations to demonstrate that high-intensity lasers interacting with nano-structured targets can produce strong edge fields and enhanced absorption, enabling potential applications like lighting up nano-scale Christmas trees.

Contribution

It introduces a novel approach of using nano-structured targets with high-intensity lasers to generate strong localized fields and increased energy absorption.

Findings

Nano-structuring increases laser absorption compared to flat targets.

Strong edge fields are generated at the top of the nano-structure.

Potential for laser-induced lighting effects at the nanoscale.

Abstract

We perform a numerical study of the interaction of a high-intensity laser pulse with a nano-structured target. In particular, we study a target where the nano-structuring increases the absorption rate as compared to the flat target case. The transport of electrons within the target, and in particular in the nano-structure, is analysed. It is shown that it is indeed possible, using a terawatt class laser, to light up a nano-scale Christmas tree. Due to the form of the tree we achieve very strong edge fields, in particular at the top where the star is located. Such edge fields, as here located at ion rich spots, makes strong acceleration gradients possible. It also results in a nice, warm glow suitable for the holiday season.