Holographic THz Beam Generation by Nonlinear Plasmonic Metasurface Emitters

Sideris，Symeon1,2; Zixian，Hu3; McDonnell，Cormac1,2; Li，Guixin3,4; Ellenbogen，Tal1,2

2023-08-16

10.1021/acsphotonics.3c00775

ACS Photonics   Impact Factor & Quartile

2330-4022

2330-4022

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.

geometric phase holography metasurface optical rectification terahertz (THz)

SCI

English

Others

European Research Council (ERC) under the European Union[715362] ; 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]

Science & Technology - Other Topics ; Materials Science ; Optics ; Physics

Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Optics ; Physics, Applied ; Physics, Condensed Matter

WOS:001041098500001

AMER CHEMICAL SOC

2-s2.0-85167927771

Scopus

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.