Field-resolved high-order sub-cycle nonlinearities in a terahertz semiconductor laser

J. Riepl; J. Raab; P. Abajyan; H. Nong; J. R. Freeman; L. H. Li; E. H. Linfield; A. G. Davies; A. Wacker; T. Albes; C. Jirauschek; C. Lange; S. S. Dhillon; R. Huber

doi:10.1038/s41377-021-00685-5

Light: Science & Applications (Dec 2021)

Field-resolved high-order sub-cycle nonlinearities in a terahertz semiconductor laser

J. Riepl,
J. Raab,
P. Abajyan,
H. Nong,
J. R. Freeman,
L. H. Li,
E. H. Linfield,
A. G. Davies,
A. Wacker,
T. Albes,
C. Jirauschek,
C. Lange,
S. S. Dhillon,
R. Huber

Affiliations

J. Riepl: Department of Physics, University of Regensburg
J. Raab: Department of Physics, University of Regensburg
P. Abajyan: Laboratoire de Physique de l’Ecole Normale Supérieure, ENS, Université PSL, CNRS, Sorbonne Université, Université de Paris
H. Nong: Laboratoire de Physique de l’Ecole Normale Supérieure, ENS, Université PSL, CNRS, Sorbonne Université, Université de Paris
J. R. Freeman: School of Electronic and Electrical Engineering, University of Leeds, Woodhouse Lane
L. H. Li: School of Electronic and Electrical Engineering, University of Leeds, Woodhouse Lane
E. H. Linfield: School of Electronic and Electrical Engineering, University of Leeds, Woodhouse Lane
A. G. Davies: School of Electronic and Electrical Engineering, University of Leeds, Woodhouse Lane
A. Wacker: Mathematical Physics and NanoLund, Lund University
T. Albes: Department of Electrical and Computer Engineering, Technical University of Munich
C. Jirauschek: Department of Electrical and Computer Engineering, Technical University of Munich
C. Lange: Department of Physics, TU Dortmund University
S. S. Dhillon: Laboratoire de Physique de l’Ecole Normale Supérieure, ENS, Université PSL, CNRS, Sorbonne Université, Université de Paris
R. Huber: Department of Physics, University of Regensburg

DOI: https://doi.org/10.1038/s41377-021-00685-5
Journal volume & issue: Vol. 10, no. 1
pp. 1 – 10

Abstract

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Two-dimensional terahertz strong-field spectroscopy reveals wave-mixing processes up to eighth order in a free-running quantum cascade laser, unraveling its sub-cycle gain dynamics and nonlinearities in a regime of negative absorption. Two-dimensional terahertz strong-field spectroscopy reveals wave-mixing processes up to eighth order in a free-running quantum cascade laser, unraveling its sub-cycle gain dynamics and nonlinearities in a regime of negative absorption.

Published in Light: Science & Applications

ISSN: 2047-7538 (Online)
Publisher: Nature Publishing Group
Country of publisher: United Kingdom
LCC subjects: Technology: Engineering (General). Civil engineering (General): Applied optics. Photonics; Science: Physics: Optics. Light
Website: https://www.nature.com/lsa/

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