High-harmonic spectroscopy of strongly bound excitons in solids

TY - JOUR

T1 - High-harmonic spectroscopy of strongly bound excitons in solids

AU - Jensen, Simon Vendelbo Bylling

AU - Madsen, Lars Bojer

AU - Rubio, Angel

AU - Tancogne-Dejean, Nicolas

PY - 2024/6

Y1 - 2024/6

N2 - We explore the nonlinear response of ultrafast strong-field-driven excitons in a one-dimensional solid with ab initio simulations. We demonstrate from our simulations and analytical model that a finite population of excitons imprints unique signatures to the high-harmonic spectra of materials. We show the exciton population can be retrieved from the spectra. We further demonstrate signatures of exciton recombination and that a shift of the exciton level is imprinted into the harmonic signal. The results open the door to high-harmonic spectroscopy of excitons in condensed-matter systems.

AB - We explore the nonlinear response of ultrafast strong-field-driven excitons in a one-dimensional solid with ab initio simulations. We demonstrate from our simulations and analytical model that a finite population of excitons imprints unique signatures to the high-harmonic spectra of materials. We show the exciton population can be retrieved from the spectra. We further demonstrate signatures of exciton recombination and that a shift of the exciton level is imprinted into the harmonic signal. The results open the door to high-harmonic spectroscopy of excitons in condensed-matter systems.

UR - http://www.scopus.com/inward/record.url?scp=85195206537&partnerID=8YFLogxK

U2 - 10.1103/PhysRevA.109.063104

DO - 10.1103/PhysRevA.109.063104

M3 - Journal article

SN - 2469-9926

VL - 109

JO - Physical Review A

JF - Physical Review A

IS - 6

M1 - 063104

ER -