Gao Jiannan, Barati Sedeh Hooman, Tsvetkov Dmitrii, Pires Danilo Gomes, Vincenti Maria Antonietta, Xu Yun, Kravchenko Ivan, George Renee, Scalora Michael, Feng Liang, Litchinitser Natalia M
Department of Electrical and Computer Engineering, Duke University, Durham, NC, 27708, USA.
Department of Information Engineering, University of Brescia, Via Branze 38, 25123 Brescia, Italy.
Sci Adv. 2025 Jun 13;11(24):eadv5190. doi: 10.1126/sciadv.adv5190.
Flat optical components, or metasurfaces, have transformed optical imaging, data storage, information processing, and biomedical applications by providing unprecedented control over light-matter interactions. These nano-engineered structures enable compact, multidimensional manipulation of light's amplitude, phase, polarization, and wavefront, producing scalar and vector beams with unique properties such as orbital angular momentum and knotted topologies. This flexibility has potential applications in optical communication and imaging, particularly in complex environments such as atmospheric turbulence and undersea scattering. However, designing metasurfaces for shorter wavelengths, such as visible and ultraviolet light, remains challenging due to fabrication limitations and material absorption. Here, we introduce an innovative concept called topology imprinting using judiciously designed all-dielectric nonlinear optical metasurfaces to replicate desired waveforms at fundamental and harmonic frequencies, opening promising avenues for advanced photonic applications.
平面光学元件或超表面通过对光与物质相互作用提供前所未有的控制，已经改变了光学成像、数据存储、信息处理和生物医学应用。这些纳米工程结构能够对光的振幅、相位、偏振和波前进行紧凑的多维操纵，产生具有诸如轨道角动量和打结拓扑等独特特性的标量和矢量光束。这种灵活性在光通信和成像中具有潜在应用，特别是在诸如大气湍流和海底散射等复杂环境中。然而，由于制造限制和材料吸收，设计用于较短波长（如可见光和紫外光）的超表面仍然具有挑战性。在此，我们引入了一种创新概念，即使用精心设计的全介质非线性光学超表面进行拓扑印记，以在基频和谐波频率上复制所需波形，为先进光子应用开辟了有前景的途径。
