Multiobjective Statistical Learning Optimization of RGB Metalens

Abstract

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Tunable metasurfaces towards versatile metalenses and metaholograms: a review

“…Accordingly, we expect that alternative design methods such as inverse design and machine learning can assist researchers in designing metasurfaces that have the desired optical and electrical responses. 23,[168][169][170][171][172][173][174][175][176][177][178] Also, recently developed 3D manufacturing methods of plasmonic and dielectric metasurfaces will enhance the flexibility of possible designs. [179][180][181][182] The development of deep learning will improve human intuition and imagination, and their design will be realized with advanced 3D manufacturing methods.…”

Dielectric metalens for miniaturized imaging systems: progress and challenges

“…For example, the performance of the ratio of average focal efficiency ( ) to the root-mean-square deviation of the focal efficiencies ( ) of the multiple focal spots, i.e., . To speed up the optimization, intelligent algorithms would be the right hand 172 – 174 .…”

Toward High‐Efficiency Ultrahigh Numerical Aperture Freeform Metalens: From Vector Diffraction Theory to Topology Optimization

“…Note that different definitions of focusing efficiency have been proposed in the recent literatures, [ 19,31,36–42 ] and we select a more general one here. [ 43–45 ] Particularly, to distinguish the contributions of transmitted field and diffracted field, the focusing efficiency is divided into transmission efficiency and diffraction efficiency as $$\begin{equation} \eta ={\eta}_{\text{t}}\cdot {\eta}_{\text{d}} \end{equation}$$where the transmission efficiency $${\eta}_{\text{t}}$$ represents the proportion of the energy transmitted through the planar metalens to the incident energy, and the diffraction efficiency $${\eta}_{\text{d}}$$ is the ratio of the focused light intensity to the transmitted light intensity.…”

“…Note that different definitions of focusing efficiency have been proposed in the recent literatures, [19,31,[36][37][38][39][40][41][42] and we select a more general one here. [43][44][45] Particularly, to distinguish the contributions of transmitted field and diffracted field, the focusing efficiency is divided into transmission efficiency and diffraction efficiency as…”