# High harmonic generation under dynamical confinement: An atom-in-box model

## TL;DR

This paper investigates high harmonic generation in a hydrogen atom confined within a dynamically oscillating spherical box, analyzing how confinement parameters influence the harmonic spectrum.

## Contribution

It introduces an atom-in-box model with a breathing spherical confinement to study high harmonic generation under dynamical confinement conditions.

## Key findings

- Harmonic spectra vary with oscillation amplitude and confinement size.
- The atomic nucleus charge affects the harmonic generation process.
- Dynamical confinement modifies the harmonic spectrum compared to free atoms.

## Abstract

We consider optical high harmonic generation in a hydrogen atom confined in a breathing spherical box by considering atomic nucleus as fixed at the center of sphere. In such spherically symmetric, dynamical trap, the high harmonic generation spectrum is calculated at different values of the oscillation amplitude, confinement size and atomic nucleus charge.