The Use of Brunel Harmonics of Elliptically Polarized Laser Pulses for High-Resolved Detection of Terahertz and Mid-Infrared Radiation

We study the generation of low-order harmonics during the interaction of helium atoms with intense elliptically-polarized laser pulses in the presence of a static electric field. Based on the solution of the three-dimensional time-dependent Schrödinger equation, the spectra of generated radiation ar...

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Bibliographic Details
Published in:Journal of physics. Conference series 2023-05, Vol.2494 (1), p.12004
Main Authors: Silaev, A A, Romanov, A A, Vvedenskii, N V
Format: Article
Language:English
Subjects:
Electric fields
Free electrons
Helium atoms
Infrared radiation
Physics
Schrodinger equation
Second harmonic generation
Waveforms
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Summary:We study the generation of low-order harmonics during the interaction of helium atoms with intense elliptically-polarized laser pulses in the presence of a static electric field. Based on the solution of the three-dimensional time-dependent Schrödinger equation, the spectra of generated radiation are calculated for various pulse ellipticities, intensities, and static-field strengths. We show the possibility of using the second harmonic generation in the free-electron current density by laser pulses with arbitrary (even circular) polarization for high-resolved measuring the waveforms of terahertz and mid-infrared radiation.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/2494/1/012004