Ellipticity control of terahertz high-harmonic generation in a Dirac semimetal

We report on terahertz high-harmonic generation in a Dirac semimetal as a function of the driving-pulse ellipticity and on a theoretical study of the field-driven intraband kinetics of massless Dirac fermions.Very efficient control of third-harmonic yield and polarization state is achieved in electr...

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Bibliographic Details
Published in:arXiv.org 2022-08
Main Authors: Germanskiy, Semyon, Dantas, Renato M A, Kovalev, Sergey, Reinhoffer, Chris, Mashkovich, Evgeny A, Paul H M van Loosdrecht, Yang, Yunkun, Faxian Xiu, Surówka, Piotr, Moessner, Roderich, Oka, Takashi, Wang, Zhe
Format: Article
Language:English
Subjects:
Ellipticity
Fermions
Harmonic control
Harmonic generations
Kinetics
Nonlinear optics
Optical communication
Optical properties
Room temperature
Signal processing
Thin films
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Summary:We report on terahertz high-harmonic generation in a Dirac semimetal as a function of the driving-pulse ellipticity and on a theoretical study of the field-driven intraband kinetics of massless Dirac fermions.Very efficient control of third-harmonic yield and polarization state is achieved in electron-doped Cd\(_3\)As\(_2\) thin films at room temperature. The observed tunability is understood as resulting from terahertz-field driven intraband kinetics of the Dirac fermions. Our study paves the way for exploiting nonlinear optical properties of Dirac matter for applications in signal processing and optical communications.
ISSN:2331-8422
DOI:10.48550/arxiv.2208.02548