反向
纳米器件
反问题
纳米光子学
偶极子
电介质
角谱法
米氏散射
计算机科学
稳健性(进化)
物理
光学
纳米技术
数学
量子力学
材料科学
几何学
光散射
数学分析
生物化学
化学
散射
基因
衍射
作者
Sergei Gladyshev,Theodosios D. Karamanos,Lina Kuhn,Dominik Beutel,Thomas Weiß,Carsten Rockstuhl,Andrey Bogdanov
出处
期刊:Nanophotonics
[De Gruyter]
日期:2023-09-02
卷期号:12 (19): 3767-3779
被引量:12
标识
DOI:10.1515/nanoph-2023-0373
摘要
Abstract Metasurfaces with bound states in the continuum (BICs) have proven to be a powerful platform for drastically enhancing light–matter interactions, improving biosensing, and precisely manipulating near- and far-fields. However, engineering metasurfaces to provide an on-demand spectral and angular position for a BIC remains a prime challenge. A conventional solution involves a fine adjustment of geometrical parameters, requiring multiple time-consuming calculations. In this work, to circumvent such tedious processes, we develop a physics-inspired, inverse design method on all-dielectric metasurfaces for an on-demand spectral and angular position of a BIC. Our suggested method predicts the core–shell particles that constitute the unit cell of the metasurface, while considering practical limitations on geometry and available materials. Our method is based on a smart combination of a semi-analytical solution, for predicting the required dipolar Mie coefficients of the meta-atom, and a machine learning algorithm, for finding a practical design of the meta-atom that provides these Mie coefficients. Although our approach is exemplified in designing a metasurface sustaining a BIC, it can, also, be applied to many more objective functions. With that, we pave the way toward a general framework for the inverse design of metasurfaces in specific and nanophotonic structures in general.
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