Affiliation:
1. The Key Laboratory of Weak Light Nonlinear Photonics Ministry of Education School of Physics and TEDA Institute of Applied Physics Nankai University Tianjin 300071 China
2. School of Materials Science and Engineering Chongqing Jiaotong University Chongqing 400074 China
3. School of Materials Science and Engineering Smart Sensing Interdisciplinary Science Center Nankai University Tianjin 300350 China
4. The Collaborative Innovation Center of Extreme Optics Shanxi University Taiyuan Shanxi 030006 China
Abstract
AbstractTerahertz frequencies locating between microwave and infrared regions can record and process optical information for next‐generation information technology such as 6G communication. Metasurfaces, as emerging planar optical components built with micro‐ or nanostructures, enable precise control, and manipulation of electromagnetic waves from near fields to far fields. These subwavelength artificial structures can be engineered to exhibit specific polarization responses, thus holding significant potential for applications in polarization detection. In the terahertz (THz) region, polarization information is crucial for identifying and analyzing the properties of materials in the terahertz. In this review, we focus on recent advances in terahertz metasurfaces for polarization manipulation and detection, including principles and emerging applications. New polarization detection methods such as polarization state conversion, polarization‐selective absorption, polarization‐selective focusing, and vector beam construction are discussed. Finally, it is concluded with a few perspectives on emerging trends and existing challenges in the fields of terahertz polarization manipulation and detection.
Funder
National Key Research and Development Program of China
Higher Education Discipline Innovation Project
Fundamental Research Funds for the Central Universities
National Natural Science Foundation of China