ArticleNanophotonics (Berlin, Germany)2023
Three-dimensionally reconfigurable focusing of laser by mechanically tunable metalens doublet with built-in holograms for alignment.
Article in Nanophotonics (Berlin, Germany), 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- Arbitrary Total Angular Momentum Vectorial Holography Using Bi-Layer Metasurfaces.Advanced materials (Deerfield Beach, Fla.) · 2026Article
- Adjoint method-based Fourier neural operator surrogate solver for wavefront shaping in tunable metasurfaces.iScience · 2025Article
- 3D alignment of distant patterns with deep-subwavelength precision using metasurfaces.Nature communications · 2024Article
- Nanofabrication: the unsung hero in enabling advances in nanophotonics.Nanophotonics (Berlin, Germany) · 2023Article
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Authors and funding
3 authors.
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No grant is acknowledged in the PubMed record.
Abstract
Metalenses have potential to replace various bulky conventional optical elements with ultrathin nanostructure arrays. In particular, active metalenses with reconfigurable focusing capability have attracted considerable interest from the academic and industrial communities. However, their tuning range is currently restricted by limited material properties and fabrication difficulties. Here, a hybrid optical system capable of three-dimensional relocation of a focal spot is proposed and experimentally demonstrated. The system comprises a mechanically actuated passive metalens doublet that can be easily fabricated with commonly available materials and processes. An incident laser can be focused to a desired point in three-dimensional space simply by rotating two metalenses or changing their separation. In addition, exploiting the polarization-multiplexing capability of metasurfaces, a hologram is incorporated to the metalenses to guide rotational and positional alignment of two metasurfaces. The ease of fabrication and alignment provided by this approach could widen its application to many practical fields.
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