Photonics Research, Volume. 9, Issue 3, 308(2021)
Birefringent transmissive metalens with an ultradeep depth of focus and high resolution
Fig. 1. Schematic diagram of proposed birefringent metalens with ultradeep DOF. The incident linearly polarized electromagnetic wave can be decomposed into two orthogonal parts, i.e., the
Fig. 2. Building blocks, and calculation and simulation results of relation between transmission amplitude and phase. (a) Schematic diagram of the triple-layered cross I-shaped meta-atom; (b) surface current distribution under the illumination of the
Fig. 3. Extinction cross-sectional spectra of the cross I-shaped meta-atoms in air for the
Fig. 4. GSWm and the design process of the birefringent metalens. (a) Comparison of convergence characteristics under different values of
Fig. 5. Fabricated metalens and experiment results. (a) Experiment results of normalized intensities along the
Fig. 6. High transverse-resolution imaging simulation results. (a) Full-wave simulated results of normalized intensities along the
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Jiaran Qi, Yongheng Mu, Shaozhi Wang, Zhiying Yin, Jinghui Qiu. Birefringent transmissive metalens with an ultradeep depth of focus and high resolution[J]. Photonics Research, 2021, 9(3): 308
Category: Surface Optics and Plasmonics
Received: Nov. 4, 2020
Accepted: Jan. 2, 2021
Published Online: Feb. 24, 2021
The Author Email: Jiaran Qi (qi.jiaran@hit.edu.cn)