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| 1 | Broadband infinite-Q plasmons enable intense Smith–Purcell radiation显示文摘With the rapid development of nanophotonics for enhancing free-electron radiation,bound states in the continuum(BICs)have emerged as a promising approach for emitting intense Smith–Purcell radiation(SPR)with enhanced intensity.However,current BIC-based methods are limited to single-frequency operation,thereby restricting their applications requiring spectral and angular tunability,such as particle detectors and light sources.To overcome this limitation,this work proposes an approach for constructing plasmonic BICs over a broad spectral range in symmetry-broken systems.By leveraging the high-Q resonances near the BICs,we achieve intense SPR with broadband tunability,potentially improving the radiation intensity by six orders compared to traditional methods.Experimentally,we validate the construction of BIC using plasmonic antennas and achieve broadband demonstration.Our proposed concept can be extended to other plasmonic or guided-wave systems,paving the way toward compact and efficient free-electron sources in hard-to-reach frequency regimes. | ZI-WEN ZHANG CHAO-HAI DU YU-LU LEI JUAN-FENG ZHU PU-KUN LIU | 2023 | Photonics Research2023，11，11： | 0 |
| 2 | 基于微纳结构的新功能光电子芯片显示文摘微纳结构的物理机理和独特的光电特性为探索新型光电子芯片提供了可能。回顾了本研究组在微纳结构光电子芯片领域的研究成果。总结了各种微纳结构中光与物质相互作用的机理,介绍了具有自由电子辐射、实时光谱成像、声子传感、光轨道角动量辐射、光量子态产生及操控等功能的光电子芯片。 | 黄翊东 张巍 冯雪 刘仿 崔开宇 | 2021 | 中国激光2021，48，15： | 0 |
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