The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 23, 2025
Filed:
Mar. 07, 2022
The Institute of Optics and Electronics, the Chinese Academy of Sciences, Sichuan, CN;
Xiangang Luo, Sichuan, CN;
Mingbo Pu, Sichuan, CN;
Yan Chen, Sichuan, CN;
Fei Zhang, Sichuan, CN;
Xiaoliang Ma, Sichuan, CN;
Xiong Li, Sichuan, CN;
Zeyu Zhao, Sichuan, CN;
Abstract
The present disclosure provides a high-order rotational symmetry unit-based nonlinear geometric phase metasurface, which sequentially comprises from the bottom to the top: a substrate (); a nonlinear material layer (); and a metasurface structure layer (), comprising multiple super-configuration units () having local high-order rotational symmetry, wherein the super-configuration units () are periodically arranged to form a lattice structure which has global high-order rotational symmetry. Under the pumping of fundamental waves in a circular polarization state, the nonlinear geometric phase metasurface can simultaneously generate nonlinear harmonic waves having the same and opposite circular polarization states as the fundamental waves, and a nonlinear geometric phase of the generated nonlinear harmonic waves is regulated and controlled by a local rotational symmetry order and lattice structure of the super-configuration units.