• Chinese Optics Letters
  • Vol. 20, Issue 3, 031101 (2022)
Jue Li1、2, Yangyang Zhou1、2、*, and Huanyang Chen1、2、**
Author Affiliations
  • 1Institute of Electromagnetics and Acoustics and Department of Physics, Xiamen University, Xiamen 361005, China
  • 2Fujian Engineering Research Center for EDA, Fujian Provincial Key Laboratory of Electromagnetic Wave Science and Detection Technology, Xiamen Key Laboratory of Multiphysics Electronic Information, Xiamen University, Xiamen 361005, China
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    DOI: 10.3788/COL202220.031101 Cite this Article
    Jue Li, Yangyang Zhou, Huanyang Chen. Square Maxwell’s fish-eye lens for near-field broadband achromatic super-resolution imaging[J]. Chinese Optics Letters, 2022, 20(3): 031101 Copy Citation Text show less
    (a) Coordination mapping in virtual space (w coordinate). (b) Coordination mapping in physical space (z coordinate). (c) The RI distribution of MFEL in virtual space (w coordinate) and ray trajectories from a point light source. (d), (e) The RI distribution of the square MFEL according to SC mapping in physical space (z coordinate) based on MFEL with n0 = 1 and n0 = 2.4, respectively, and the corresponding ray trajectories from a point light source.
    Fig. 1. (a) Coordination mapping in virtual space (w coordinate). (b) Coordination mapping in physical space (z coordinate). (c) The RI distribution of MFEL in virtual space (w coordinate) and ray trajectories from a point light source. (d), (e) The RI distribution of the square MFEL according to SC mapping in physical space (z coordinate) based on MFEL with n0 = 1 and n0 = 2.4, respectively, and the corresponding ray trajectories from a point light source.
    Imaging performance of the square MFEL with different n0. (a)–(d) The related electric field intensity distribution and the corresponding FWHM of the square MFEL at 15 GHz with n0 of 1, 1.7, 2.4, and 3.1, respectively. (e)–(h) The relative electric field Ez distributions, respectively.
    Fig. 2. Imaging performance of the square MFEL with different n0. (a)–(d) The related electric field intensity distribution and the corresponding FWHM of the square MFEL at 15 GHz with n0 of 1, 1.7, 2.4, and 3.1, respectively. (e)–(h) The relative electric field Ez distributions, respectively.
    Broadband imaging effect of solid immersion square MFEL at different frequencies. (a)–(d) The electric field intensity and the corresponding FWHM of the solid immersion square MFEL at frequencies of 7 GHz, 10 GHz, 13 GHz, and 16 GHz, respectively. (e)–(h) The corresponding real part of electric field distribution, respectively.
    Fig. 3. Broadband imaging effect of solid immersion square MFEL at different frequencies. (a)–(d) The electric field intensity and the corresponding FWHM of the solid immersion square MFEL at frequencies of 7 GHz, 10 GHz, 13 GHz, and 16 GHz, respectively. (e)–(h) The corresponding real part of electric field distribution, respectively.
    (a)–(f) Electric field intensity distribution and the corresponding FWHM of the solid immersion square MFEL (the first row) and solid immersion quasi-square MFEL (the second row) at frequencies of 8 GHz, 10 GHz, and 12 GHz, respectively.
    Fig. 4. (a)–(f) Electric field intensity distribution and the corresponding FWHM of the solid immersion square MFEL (the first row) and solid immersion quasi-square MFEL (the second row) at frequencies of 8 GHz, 10 GHz, and 12 GHz, respectively.
    (a)–(d) Imaging performance of solid immersion square MFELs with n0 = 2.4 at the frequencies of 8 GHz, 9 GHz, 11 GHz, and 12 GHz, respectively. (e)–(g) Imaging performance of conventional square MFELs with n0 = 1 at the frequencies of 8 GHz, 9 GHz, 11 GHz, and 12 GHz, respectively.
    Fig. 5. (a)–(d) Imaging performance of solid immersion square MFELs with n0 = 2.4 at the frequencies of 8 GHz, 9 GHz, 11 GHz, and 12 GHz, respectively. (e)–(g) Imaging performance of conventional square MFELs with n0 = 1 at the frequencies of 8 GHz, 9 GHz, 11 GHz, and 12 GHz, respectively.
    Electric field distribution of super-resolution information channel cascaded by three identical solid immersion MFELs with a 0.6 mm air gap at 12 GHz.
    Fig. 6. Electric field distribution of super-resolution information channel cascaded by three identical solid immersion MFELs with a 0.6 mm air gap at 12 GHz.
    Jue Li, Yangyang Zhou, Huanyang Chen. Square Maxwell’s fish-eye lens for near-field broadband achromatic super-resolution imaging[J]. Chinese Optics Letters, 2022, 20(3): 031101
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