谐振硅膜超表面的三次谐波产生与成像

IF 15.3 1区 物理与天体物理 Q1 OPTICS
Ze Zheng, Lei Xu, Lujun Huang, Daria Smirnova, Khosro Zangeneh Kamali, Arman Yousefi, Fu Deng, Rocio Camacho-Morales, Cuifeng Ying, Andrey E. Miroshnichenko, Dragomir N. Neshev, Mohsen Rahmani
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引用次数: 5

摘要

介电超表面由于能够支持基于密型多极共振的强光-物质相互作用,在增强光学非线性世代方面发挥着越来越重要的作用。与由纳米颗粒周期性排列组成的超表面相比,逆膜超表面为支持多极共振提供了独特的可能性,同时保持了小晶胞尺寸、大模体积和高场增强,以增强非线性频率转换。本文从理论上和实验上研究了硅二聚体孔膜超表面连续介质中束缚态的形成。我们证明了我们的bic形成的共振在硅膜薄膜内部具有强大和可定制的电场近场约束。此外,我们证明了通过调节孔间的间隙,可以打开一个泄漏通道,将这些规则的BICs转换为准BICs,可以在平面波入射下直接激发。为了证明这种超表面的能力,我们展示了基于共振膜超表面的三次谐波生成(THG)过程的红外图像到可见光范围的转换。我们的研究结果为实现高效非线性光子元器件提供了一个新的范例,并有望将非线性结构表面的应用扩展到新型全光学近红外成像技术。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Third-harmonic generation and imaging with resonant Si membrane metasurface
Dielectric metasurfaces play an increasingly important role in enhancing optical nonlinear generations owing to their ability to support strong light-matter interactions based on Mie-type multipolar resonances. Compared to metasurfaces composed of the periodic arrangement of nanoparticles, inverse, so-called, membrane metasurfaces offer unique possibilities for supporting multipolar resonances, while maintaining small unit cell size, large mode volume and high field enhancement for enhancing nonlinear frequency conversion. Here, we theoretically and experimentally investigate the formation of bound states in the continuum (BICs) from silicon dimer-hole membrane metasurfaces. We demonstrate that our BIC-formed resonance features a strong and tailorable electric near-field confinement inside the silicon membrane films. Furthermore, we show that by tuning the gap between the holes, one can open a leaky channel to transform these regular BICs into quasi-BICs, which can be excited directly under normal plane wave incidence. To prove the capabilities of such metasurfaces, we demonstrate the conversion of an infrared image to the visible range, based on the Third-harmonic generation (THG) process with the resonant membrane metasurfaces. Our results suggest a new paradigm for realising efficient nonlinear photonics metadevices and hold promise for extending the applications of nonlinear structuring surfaces to new types of all-optical near-infrared imaging technologies.
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来源期刊
CiteScore
19.30
自引率
7.10%
发文量
128
期刊介绍: Opto-Electronic Advances (OEA) is a distinguished scientific journal that has made significant strides since its inception in March 2018. Here's a collated summary of its key features and accomplishments: Impact Factor and Ranking: OEA boasts an impressive Impact Factor of 14.1, which positions it within the Q1 quartiles of the Optics category. This high ranking indicates that the journal is among the top 25% of its field in terms of citation impact. Open Access and Peer Review: As an open access journal, OEA ensures that research findings are freely available to the global scientific community, promoting wider dissemination and collaboration. It upholds rigorous academic standards through a peer review process, ensuring the quality and integrity of the published research. Database Indexing: OEA's content is indexed in several prestigious databases, including the Science Citation Index (SCI), Engineering Index (EI), Scopus, Chemical Abstracts (CA), and the Index to Chinese Periodical Articles (ICI). This broad indexing facilitates easy access to the journal's articles by researchers worldwide.
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