WebAn electromagnetic metasurface refers to a kind of artificial sheet material with sub-wavelength thickness. Metasurfaces can be either structured or unstructured with subwavelength-scaled patterns in the horizontal dimensions. In electromagnetic theory, metasurfaces modulate the behaviors of electromagnetic waves through specific … WebNov 11, 2024 · Second-order nonlinear metasurfaces have proven their ability to efficiently convert the frequency of incident signals over subwavelength thickness. However, the availability of second-order nonlinear materials for such metasurfaces has so far been limited to III-V semiconductors, which have low tra …
Recent progress on metasurfaces: applications and fabrication
WebApr 4, 2024 · Direct-write femtosecond laser nanostructuring of 300 nanometer thick a-Si:H films results in space-variant functional metasurfaces with form birefringence of up to … WebJan 4, 2024 · The finite element model for EOT metasurfaces (S1). Fabrication of Au films on the CaF 2 substrates (S2). Dependence of the hole diameter with laser pulse energy (S3). Topography of the ablated … hilja nimipäivä
Self-adjusted all-dielectric metasurfaces for deep …
WebJun 4, 2024 · Metasurfaces have been enabling the miniaturization and integration of complex optical functionalities within an ultrathin platform by engineering the scattering features of localized modes. However, these efforts have mostly been limited to the manipulation of externally produced coherent light, e.g., from a laser. WebOct 19, 2024 · The fundamental mechanism of the rechargeable metasurfaces and corresponding color display is illustrated in Figure 1.The metasurface is firstly fabricated … WebSep 27, 2024 · The dotted black line is the high-harmonic spectrum from the unpatterned Si film for comparison.72 (b) Frequency up-conversion spectrum obtained from a GaSe metasurface when pumped by two continuous wave lasers at wavelengths of 1540.0 nm (laser 1) and 1543.9 nm (laser 2), showing second-harmonic generation (SHG 1 from … hiljan piha