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Title: Axially tailored light field by means of a dielectric metalens
Authors: Fan, Xinhao
Li, Peng
Guo, Xuyue
Li, Bingjie
Li, Yu
Liu, Sheng
Zhang, Yi
Zhao, Jianlin
Keywords: Science::Physics
Issue Date: 2020
Source: Fan, X., Li, P., Guo, X., Li, B., Li, Y., Liu, S., . . . Zhao, J. (2020). Axially tailored light field by means of a dielectric metalens. Physical Review Applied, 14(2), 024035-. doi:10.1103/PhysRevApplied.14.024035
Journal: Physical Review Applied
Abstract: Metasurfaces that enable wave-front manipulation within the subwavelength range exhibit fascinating capabilities and application potentials in ultrathin functional devices. Therein, various metasurfaces to realize delicate transverse and even three-dimensional structured light fields have been proposed for applications such as holographic displays, imaging, optical manipulation, etc. However, a metasurface with the capability of tailoring the axial structure of a light field has not been reported so far. Here, we propose and experimentally demonstrate a dielectric metalens to tailor the axial intensity distribution of a light field, based on the independent control of amplitude and phase. The metalens is designed according to an optimized Fourier spectrum encoding method, which allows construction of an ultrasmall nondiffractive light field with any arbitrary preestablished axial structure. This axial modulation scenario enriches the three-dimensional wave-front modulation functionality of the metasurface, and can be implemented for other waves beyond optics, from acoustic and elastic waves to matter waves.
ISSN: 2331-7019
DOI: 10.1103/PhysRevApplied.14.024035
Rights: © 2020 American Physical Society (APS). All rights reserved. This paper was published in Physical Review Applied and is made available with permission of American Physical Society (APS).
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SCBE Journal Articles

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