太赫兹(THz)波因具有独特的优势而逐渐成为备受瞩目的电磁波段。随着THz技术及应用的发展，如何实现对THz波的高效、全面系统的调控已成为THz领域急需解决的关键问题。本项目申请人依据多年从事THz源及器件的经验，提出THz源（一级调控）及外加器件（二级调控）的概念，从这两方面进行机制及系统研究。具体包括：基于自旋流相干调控的THz源、基于泄漏模非线性波导相干调控的THz源、硅基钙钛矿型异质结THz调控、人工局域表面等离激元THz非线性调控及新型编码超构材料THz调控等。以上研究可望实现对THz波的频率/波长、相位、偏振、功率/能量、空间及时间特性等参数的调控，克服现有THz调控技术的单一性、孤立性等瓶颈，在此基础上，我们拟从THz调控的需求、THz源及特性的综合考虑，探索可编程的智能化复合调控系统。项目的实施将奠定我国THz波调控方面的理论及技术基础，推动太赫兹技术实用化进程。

Due to the unique advantages, terahertz (THz) wave gradually become high-profile electromagnetic wave period. With the development of the THz technology and application, how to realize the high efficiency, comprehensive and systematic control of THz wave with become urgently needs to solve the key problem of THz field. Based on many years research experiences of THz sources and devices, the applicant proposes the concept of in this project, from the THz sources (primary controlling) and devices (secondary controlling) plus two aspects of mechanism and system research. The project includes: the controllable efficient THz sources based on coherent spin flow, the leakage model of nonlinear coherent control of THz sources, perovskite/silicon hybrid hetero-junction control, THz nonlinear control based on artificial localized surface plasmons, new coding structure metamaterial THz control, etc. The research results will overcome the existing control technology of oneness, isolation and so on, realize the THz frequency/wavelength, phase, polarization, power/energy, space and time characteristics to adjust and control parameters. On this basis, a programmable intelligent composite control system will be researched under the comprehensive consideration of THz control requirements, THz sources and their characteristics. Through the implementation of this project, it is expected to lay the THz control in our country in terms of theory and technology base, promote the development of THz application technology.