Highly tunable elastic dielectric metasurface lenses
By Seyedeh Mahsa Kamali, E. Arbabi, Amir Arbabi, Y. Horie, A. Faraon. 2016
369 citations recorded by the source corpus.
Dielectric metasurfaces are two‐dimensional structures composed of nano‐scatterers that manipulate the phase and polarization of optical waves with subwavelength spatial resolution, thus enabling ultra‐thin components for free‐space optics. While high performance devices with various functionalities, including some that are difficult to achieve using conventional optical setups have been shown, most demonstrated components have fixed parameters. Here, we demonstrate highly tunable dielectric metasurface devices based on subwavelength thick silicon nano‐posts encapsulated in a thin transparent elastic polymer. As proof of concept, we demonstrate a metasurface microlens operating at 915 nm, with focal distance tuning from 600 μm to 1400 μm (over 952 diopters change in optical power) through radial strain, while maintaining a diffraction limited focus and a focusing efficiency above 50%. The demonstrated tunable metasurface concept is highly versatile for developing ultra‐slim, multi‐functional and tunable optical devices with widespread applications ranging from consumer electronics to medical devices and optical communications.
Subfields: Aerospace Engineering, Electronic, Optical and Magnetic Materials, Mechanical Engineering
View Paper: https://www.semanticscholar.org/paper/d8e73a752f79154cb70a2c6f2b1fe50223d61286
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In Aerospace Engineering
In Electronic, Optical and Magnetic Materials
- Seyedeh Mahsa Kamali
- E. Arbabi
- A. Faraon
- Amir Arbabi
- Y. Horie
- Mohammadsadegh Faraji-Dana
- M. Hong
- F. Capasso
Citations in the corpus
- Full-Stokes Imaging Polarimetry Using Dielectric Metasurfaces (2018, background): “]. Second, the relatively large metasurface lattice constant of 480 nm does not satisfy the Nyquist sampling theorem for the large-deflection-angle transmission masks inside the fused silica substrate [58]. This results in spurious diffraction of light inside the substrate. Finally, the mask is perio”
- MEMS-tunable dielectric metasurface lens (2017, background): “Highly tunable diffractive and metasurface lenses based on stretchable substrates [15, 16, 19] have also been demonstrated, but they have low speeds and require a radial stretching mechanism that might increase the total device size.”
- Electromagnetic metasurfaces: physics and applications (2019, neutral): “, color tuning [147,148], switchable holograms [149], and varifocal lenses [150]).”
- Tunable and reconfigurable metasurfaces and metadevices (2018, background): “, John Wiley and Sons; (e–h) ref.(70), John Wiley and Sons; (i–l) ref.”