期刊
PHYSICAL REVIEW A
卷 105, 期 5, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.105.053503
关键词
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资金
- Russian Foundation for Basic Research [20-21-00131, 20-21-00140, 20-32-90228]
- Russian Science Foundation [19-72-10054, 20-12-00088]
- Welch Foundation [A-1801-20180324]
- Russian Science Foundation [19-72-10054] Funding Source: Russian Science Foundation
Electric-current transients driven by high-peak-power midinfrared laser pulses can provide a source of broadband current, wide-angle microwave-terahertz radiation, with specific polarization properties and radiation patterns, which are important for studying ultrafast laser-plasma interactions.
Electric-current transients driven by high-peak-power midinfrared laser pulses are shown to provide a source of broadband current, wide-angle microwave-terahertz radiation, whose spectral, spatial, and polarization properties can be adequately understood from a perspective of impulsively driven antenna radiation. When suitably tailored, such laser-driven antennas are shown to generate bright microwave-terahertz pulses with energies in the range of tens of microjoules and ultrawide-angle radiation patterns extending to obtuse angles well beyond the broadside plane, with a considerable radiation flux detected at angles 0 > 125 degrees relative to the direction of the driver beam. Polarization of microwave radiation from laser-driven plasmas is shown to bear clear signatures of the symmetry of transient plasma currents, providing a sensitive probe for ultrafast laser-plasma interactions.
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