# Envelope-driven recollisions triggered by an elliptically polarized laser pulse

## TL;DR

This paper reveals a novel recollision channel in elliptically polarized laser pulses where the laser envelope significantly influences electron return energy and probability, enabling efficient multiple ionization despite high ellipticity.

## Contribution

It introduces a new recollision mechanism driven by the laser envelope that persists at high ellipticity, contrasting with previous suppression effects.

## Key findings

- Recollision probability remains substantial at high ellipticity.
- Laser envelope critically influences electron energy gain.
- Efficient multiple ionization occurs via this new channel.

## Abstract

Increasing ellipticity usually suppresses the recollision probability drastically. In contrast, we report on a recollision channel with large return energy and a substantial probability, regardless of the ellipticity. The laser envelope plays a dominant role in the energy gained by the electron, and in the conditions under which the electron comes back to the core. We show that this recollision channel eciently triggers multiple ionization with an elliptically polarized pulse.