Holographic THz Beam Generation by Nonlinear Plasmonic Metasurface Emitters
The advancement of terahertz (THz) technology hinges on the progress made in the development of efficient sources capable of generating and shaping the THz emission. However, the currently available THz sources provide limited control over the generated field. Here, we use near-field interactions in nonlinear Pancharatnam-Berry phase plasmonic metasurfaces to achieve deep subwavelength, precise, and continuous control over the local amplitude of the emitted field. We show that this new ability can be used for holographic THz beam generation. Specifically, we demonstrate the generation of precisely shaped Hermite-Gauss, Top-Hat, and triangular beams. We show that using this method, higher-order modes are completely suppressed, indicating optimal nonlinear diffraction efficiency. In addition, we demonstrate the application of the generated structured beams for obtaining enhanced imaging resolution and contrast. These demonstrations hold immense potential to address challenges associated with a broad range of new applications employing THz technology.
European Research Council (ERC) under the European Union ; ISF-NSFC joint research program[3450/21] ; National Natural Science Foundation of China["91950114","12161141010"] ; Guangdong Provincial Innovation and Entrepreneurship Project[2017ZT07C071] ; Natural Science Foundation of Shenzhen Innovation Commission[JCYJ20200109140808088]
|WOS Research Area|
Science & Technology - Other Topics ; Materials Science ; Optics ; Physics
Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Optics ; Physics, Applied ; Physics, Condensed Matter
|WOS Accession No|
Cited Times [WOS]:0
|Document Type||Journal Article|
|Department||Department of Materials Science and Engineering|
1.Department of Physical Electronics,School of Electrical Engineering,Tel-Aviv University,Tel Aviv,6997801,Israel
2.Center for Light-Matter Interaction,Tel-Aviv University,Tel-Aviv,6779801,Israel
3.Department of Materials Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China
4.Institute for Applied Optics and Precision Engineering,Southern University of Science and Technology,Shenzhen,518055,China
Sideris，Symeon,Zixian，Hu,McDonnell，Cormac,et al. Holographic THz Beam Generation by Nonlinear Plasmonic Metasurface Emitters[J]. ACS Photonics,2023,10(8):2972-2979.
Sideris，Symeon,Zixian，Hu,McDonnell，Cormac,Li，Guixin,&Ellenbogen，Tal.(2023).Holographic THz Beam Generation by Nonlinear Plasmonic Metasurface Emitters.ACS Photonics,10(8),2972-2979.
Sideris，Symeon,et al."Holographic THz Beam Generation by Nonlinear Plasmonic Metasurface Emitters".ACS Photonics 10.8(2023):2972-2979.
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