Recollision Scenario without Tunneling: Role of the Ionic Core Potential

posted May 13, 2016, 11:07 PM by François Mauger   [ updated May 13, 2016, 11:19 PM ]

Abstract

We present a purely classical recollision scenario, i.e., without tunneling, which, in contrast to the standard three-step model, takes into account the ionic core potential fully at all stages of the recollision process and is valid at all intensities. We find that a key periodic orbit drives the recollisions by guiding electrons away and back to the core. At sufficiently high intensity, we connect our scenario to the three-step model, and explain why the three-step model leads to good agreement with the cutoff in high harmonic generation despite neglecting the core potential after tunneling.

Reference

A. Kamor, C. Chandre, T. Uzer, and F. Mauger - Recollision Scenario without Tunneling: Role of the Ionic Core Potential - Physical Review Letters 112, 133003 (2014)