Title Universal properties of locally generated terahertz waveforms from polarization-controlled two- and multicolor ionizing fields
Authors Alirezaee, H ; Skupin, S ; Vaičaitis, Virgilijus ; Demircan, A ; Babushkin, I ; Bergé, Luc ; Morgner, U
DOI 10.1103/dj4k-q4x2
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Is Part of Physical review research.. College Park : American Physical Society. 2025, vol. 7, iss. 3, art. no. 033057, p. [1-16].. ISSN 2643-1564
Abstract [eng] The polarization states of terahertz (THz) radiation generated in a photoionized gas driven by intense two- or multi-frequency fields with locally controlled polarization are studied. We reveal a universal property of the resulting THz waveforms: the ellipticity of their polarization state increases linearly with frequency. This "linear chirp of ellipticity"makes plasma-based THz generation unique among other THz sources. However, it also imposes some constraints on the polarization properties of the generated THz radiation. We derive a general expression for the THz ellipticity and demonstrate how the polarization states of the generated THz waveforms can be manipulated and controlled by the polarization of the pump pulses.
Published College Park : American Physical Society
Type Journal article
Language English
Publication date 2025
CC license CC license description