High-harmonic spectroscopy of strongly bound excitons in solids

被引：4

作者：

Jensen, Simon Vendelbo Bylling ^{[1
]}

Madsen, Lars Bojer ^{[1
]}

Rubio, Angel ^{[2
,3
,4
]}

Tancogne-Dejean, Nicolas ^{[2
,3
]}

机构：

[1] Aarhus Univ, Dept Phys & Astron, DK-8000 Aarhus, Denmark

[2] Max Planck Inst Struct & Dynam Matter, D-22761 Hamburg, Germany

[3] Ctr Free Electron Laser Sci, D-22761 Hamburg, Germany

[4] Flatiron Inst, Ctr Computat Quantum Phys CCQ, New York, NY 10010 USA

来源：

PHYSICAL REVIEW A | 2024年 / 109卷 / 06期

关键词：

LATTICE INSTABILITY; SOMMERFELD FACTORS; DYNAMICS; GENERATION; SEMICONDUCTORS; ABSORPTION; SI;

D O I：

10.1103/PhysRevA.109.063104

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

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.

引用

页数：12

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