Controlling the Angular Divergence of Terahertz Radiation Generated by Single-Color Filaments Using Phase Optical Elements

We have experimentally obtained two-dimensional distributions of terahertz radiation generated by one or four filaments formed by phase optical elements in air. It has been demonstrated that the use of the phase mask reduces the propagation angles of terahertz beam by approximately one and a half ti...

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Bibliographic Details
Published in:JETP letters 2023-10, Vol.118 (7), p.491-494
Main Authors: Pushkarev, D. V., Rizaev, G. E., Kosareva, O. G., Seleznev, L. V.
Format: Article
Language:English
Subjects:
Atomic
Biological and Medical Physics
Biophysics
Filaments
Molecular
Optical and Plasma Physics
Optical components
Optics and Laser Physics
Particle and Nuclear Physics
Physics
Physics and Astronomy
Quantum Information Technology
Solid State Physics
Spintronics
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Summary:We have experimentally obtained two-dimensional distributions of terahertz radiation generated by one or four filaments formed by phase optical elements in air. It has been demonstrated that the use of the phase mask reduces the propagation angles of terahertz beam by approximately one and a half times, which is due to the interference of terahertz radiation from four sources. The use of the Dammann grating slightly enlarges these angles.
ISSN:0021-3640
1090-6487
DOI:10.1134/S0021364023602786