Abstract
The phase responses of the adopted resonating meta-atoms typically exhibit Lorentz-like frequency dispersion, therefore such metadevices can usually work only at a narrow band frequency. Here, we design and fabricate a metasurface composed of silicon posts for the terahertz frequencies in transmission mode, and we experimentally demonstrate achromatic Airy beams and achromatic focusing.
© 2021 The Author(s)
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