4.7 Article

Optical and acoustic super-resolution imaging in a Stampfli-type photonic quasi-crystal flat lens

Journal

RESULTS IN PHYSICS
Volume 27, Issue -, Pages -

Publisher

ELSEVIER
DOI: 10.1016/j.rinp.2021.104537

Keywords

Photonic quasi-crystal; Acousto-optic devices; Super-resolution; Band gap

Funding

  1. National Natural Science Foundation of China [61405058, 62075059]
  2. Natural Science Foundation of Hunan Province [2017JJ2048, 2020JJ4161]
  3. Fundamental Research Funds for the Central Universities [531118040112]

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The study introduces the Stampfli-type photonic quasi-crystal (S-PTQC) and S-PTQC flat lens, enabling optical and acoustic super-resolution imaging. Acoustic super-resolution imaging is more stable, and the flat lens has the potential to manipulate electromagnetic and elastic waves.
Super-resolution imaging has been separately realized with two-dimensional photonic and phononic quasicrystal flat lenses for the past few decades, but they are still utilized for independent disciplines. In this paper, Stampfli-type photonic quasi-crystal (S-PTQC) and S-PTQC flat lens are proposed. The numerical results demonstrate that the common photonic and phononic band gaps exist within two normalized frequency ranges of the S-PTQC. Moreover, optical and acoustic super-resolution imaging is achieved with the S-PTQC flat lens. The properties of acoustic super-resolution imaging are more stable compared to the optical counterpart. The proposed S-PTQC flat lens has the potential ability to manipulate electromagnetic and elastic waves, and will provide a new methodology for realizing diverse acousto-optic devices.

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