Terahertz wide range phase manipulation with super-resolution precision by near-field nonlinear coupling of a digitally coding needle meta-chip

作     者：HUAJIE LIANG HONGXIN ZENG TIANCHI ZHOU HANYU ZHAO SHAOKANG GU LIN ZOU TAO JIANG LAN WANG FENG LAN SHIXIONG LIANG ZHIHONG FENG ZIQIANG YANG YAXIN ZHANG HUAJIE LIANG;HONGXIN ZENG;TIANCHI ZHOU;HANYU ZHAO;SHAOKANG GU;LIN ZOU;TAO JIANG;LAN WANG;FENG LAN;SHIXIONG LIANG;ZHIHONG FENG;ZIQIANG YANG;YAXIN ZHANG

作者机构：Huzhou Key Laboratory of Terahertz Integrated Circuits and SystemsYangtze Delta Region Institute(Huzhou)University of Electronic Science and Technology of ChinaHuzhou 313001China Sichuan Engineering Center of Integrated Optoelectronic&Radio Meta-chipsSchool of Electronic Science and EngineeringUniversity of Electronic Science and Technology of ChinaChengdu 611731China National Key Laboratory of Solid-State Microwave Device and CircuitHebei Semiconductor Research InstituteShijiazhuang 050051China Zhangjiang LaboratoryShanghai 201204China 

出 版 物：《Photonics Research》 (光子学研究（英文版）)

年 卷 期：2024年第12卷第9期

页      面：1868-1876页

核心收录：

学科分类：080903[工学-微电子学与固体电子学] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 

基　　金：National Natural Science Foundation of China(62301112,61921002,61931006,62101111,62131007,U20A20212) National Key Research and Development Program of China(2021YFA1401000) Sichuan Province Science and Technology Support Program(2020JDRc0028) Fundamental Research Funds for the Central Universities(ZYGX2020ZB011) “Pioneer”and“Leading Goose”R&D Program of Zhejiang(2023C01139) 

主　　题：tuning phase resolution 

摘      要：Achieving ultra-precise wide-range terahertz(THz)phase modulation has been a long-standing challenge due to the short wavelength and sensitive phase of THz *** paper proposes a new ultra-high precision phase control method employing a digitally coding needle meta-chip embedded in a *** needle tips can effectively couple THz waves via the charge aggregation *** controlling the Schottky diodes with coding voltages,the charge on each meta-structure part can be tuned to form strong or weak resonances,producing phase ***,the massive charge accumulation and the sub-λ∕10 distance between needle tips lead to near-field coupling among multiple ***,modulation of the charge at each tip by multichannel coding voltages enables combined resonance tuning of THz waves,yielding a nonlinear phase ***,a meta-chip containing 8 needle meta-structure units is demonstrated,which breaks through the precision limitation of independent units and realizes super-resolution precision phase modulation similar to super-resolution *** the 213–227 GHz band,we achieve a phase shift exceeding 180°with 11.25°accuracy,and a phase shift of over 170°with an accuracy of 3°.This super-resolution phase modulation strategy provides a new idea for future highprecision applications of THz integrated systems.