Generalized Coherent Wave Control at Dynamic Interfaces
Abstract Coherent wave control is of key importance across a broad range of fields such as electromagnetics, photonics, and acoustics. It enables us to amplify or suppress the outgoing waves via engineering amplitudes and phases of multiple incidences. However, within a purely spatially (temporally) engineered medium, coherent wave control requires the frequency of the associated incidences to be identical (opposite). In this work, this conventional constraint is broken by generalizing coherent wave control into a spatiotemporally engineered medium, i.e., the system featuring a dynamic interface. Owing to the broken translational symmetry in space and time, both the subluminal and superluminal interfaces allow interference between scattered waves regardless of their different frequencies and wavevectors. Hence, one can flexibly eliminate the backward‐ or forward‐propagating waves scattered from the dynamic interfaces by controlling the incident amplitudes and phases. The work not only presents a generalized way for reshaping arbitrary waveforms but also provides a promising paradigm to generate ultrafast pulses using low‐frequency signals. It has also implemented suppression of forward‐propagating waves in microstrip transmission lines with fast photodiode switches.
Authors
- Linyang Zou (ORCID: https://orcid.org/0009-0000-9346-3378)
- Yimei YU
- Zhuo Li (ORCID: https://orcid.org/0000-0002-8511-9443)
- Qianru Yang (ORCID: https://orcid.org/0009-0007-2812-7678)
- Lei Gao (ORCID: https://orcid.org/0000-0001-5103-9114)
- S. C. Hou (ORCID: https://orcid.org/0000-0002-8146-977X)
- Dongliang Gao (ORCID: https://orcid.org/0000-0002-5731-0312)
- Xiao Lin (ORCID: https://orcid.org/0000-0002-1833-1065)
- Liangliang Liu (ORCID: https://orcid.org/0000-0003-3405-355X)
- Hao Hu (ORCID: https://orcid.org/0000-0003-2892-1971)
- Haotian Wu (ORCID: https://orcid.org/0000-0003-3247-4377)
- Yukun Yang (ORCID: https://orcid.org/0000-0002-8369-8365)
- Jiang Xiong (ORCID: https://orcid.org/0000-0003-0158-1399)
Institutions
- Xidian University (CN)
- University of Electronic Science and Technology of China (CN)
- Nanyang Technological University (SG)
- Soochow University (CN)
- National Engineering Research Center of Electromagnetic Radiation Control Materials (CN)
- State Key Laboratory of Modern Optical Instruments (CN)
- Suzhou City University
- Zhejiang University (CN)
- Nanjing University of Aeronautics and Astronautics (CN)
Publication Details
- Journal
- Laser & Photonics Review
- Published
- 2024-11-15
- DOI
- https://doi.org/10.1002/lpor.202400399
- Citations
- 4
- Primary Topic
- Advanced Fiber Laser Technologies
- Type
- article
- Field-Weighted Citation Impact
- 1.35
Funders
- National Natural Science Foundation of China
- Natural Science Foundation of Jiangsu Province
- Fundamental Research Funds for the Central Universities