Terahertz radiation : Spectrally selective modulation of terahertz radiation beams. (30th November 2020)

• Record Type: Journal Article
• Authors: Ushakov, A A; Matoba, M; Nemoto N, ; Kanda N, ; Konishi K, ; Panov, N A; Shipilo, D E; Chizhov, P A; Bukin, V V; Kuwata-Gonokami, M; Yumoto, J; Kosareva, O G; Garnov, S V; Savel'ev, A B
• Is Part Of: Quantum electronics. Volume 50:Number 11(2020)
• Page Start: 1029
• Page End: 1033
• Publication Date: 2020-11-30
• Subjects: Quantum electronics -- Periodicals; 537.5
• DOI: 10.1070/QEL17453
• Languages: English
• ISSNs: 1063-7818

Abstract

Abstract: We report the results of an experimental study on the focusing of broadband terahertz (THz) radiation using lenses and Fresnel zone plates. The obtained data are compared with the results of numerical simulations. It is shown that the use of lenses for focusing THz radiation can lead to the appearance of a ring structure in the spatial distributions of its intensity. The use of Fresnel zone plates allows the spatial distribution of the THz radiation intensity to be varied at selected frequencies of the spectrum.