公开(公告)号：US20230185116A1

公开(公告)日：2023-06-15

申请号：US17925027

申请日：2021-05-14

Applicant: RAMOT AT TEL-AVIV UNIVERSITY LTD.

Inventor： Tal Ellenbogen ,  Guixin Li

IPC: G02F1/01 ,  H01Q9/02

CPC classification number: G02F1/0136 ,  H01Q9/02 ,  G02F2203/13

Abstract: Apparatus for generating THz (teraftertz) radiation, the apparatus comprising: a substrate; a planar array of subwave-length antennas formed on the substrate having rotational symmetry, Cn, of order “n” greater than or equal to 3 and rotational symmetry cycle 2π/η, which are excitable by near infrared (NIR)_pump radiation to radiate THz radiation having wavelengths that are substantially larger than characteristic dimensions of the subwavelength antenna; wherein the array comprises a plurality of sections each comprising plurality of subwavelength antennas exhibiting a spatial pattern different from that of an adjacent section of the plurality of sections.