Polarization spectroscopy of high-order harmonic generation in gallium arsenide - CEA - Commissariat à l’énergie atomique et aux énergies alternatives Access content directly
Journal Articles Optics Express Year : 2022

Polarization spectroscopy of high-order harmonic generation in gallium arsenide

Abstract

An interesting property of high harmonic generation in solids is its laser polarization dependent nature which in turn provides information about the crystal and band structure of the generation medium. Here we report on the linear polarization dependence of high-order harmonic generation from a gallium arsenide crystal. Interestingly, we observe a significant evolution of the anisotropic response of above bandgap harmonics as a function of the laser intensity. We attribute this change to fundamental microscopic effects of the emission process comprising a competition between intraband and interband dynamics. This intensity dependence of the anisotropic nature of the generation process offers the possibility to drive and control the electron current along preferred directions of the crystal, and could serve as a switching technique in an integrated all-solid-state petahertz optoelectronic device.

Dates and versions

cea-03821939 , version 1 (20-10-2022)

Identifiers

Cite

Shatha Kaassamani, Thierry Auguste, Nicolas Tancogne-Dejean, Xu Liu, Willem Boutu, et al.. Polarization spectroscopy of high-order harmonic generation in gallium arsenide. Optics Express, 2022, 30 (22), pp.40531. ⟨10.1364/OE.468226⟩. ⟨cea-03821939⟩
30 View
0 Download

Altmetric

Share

Gmail Facebook X LinkedIn More