numerical simulations using finite element method comsol multiphysics v. 6.2  (COMSOL Inc)

Journal: Scientific Reports

Article Title: Dual-functional metalenses for the polarization-controlled generation of focalized vector beams in the telecom infrared

doi: 10.1038/s41598-023-36865-z

Figure Lengend Snippet: Example of FEM simulations of a metaunit ( P x = P y = 600 nm) made of silicon nanopillars ( L x = 150 nm, L y = 300 nm, and H = 850 nm, i.e., pillar #9 in Fig. ) over a silicon substrate. ( a ) Boundary conditions imposed to properly simulate the nanostructure. PBC periodic boundary conditions. PML perfectly matched layers. ( b – d ) Electric field under TE polarization in input impinging from the air side. Lateral cross-sections at y = 0 ( b ), x = 0 ( c ), and top-view cross-section at z = H /4 ( d ). Input wavelength λ = 1310 nm. Colors refer to the intensity of the electric field (a.u.).

Article Snippet: We set up custom-made Finite-Element Method (FEM) numerical simulations in the wavelength domain (using COMSOL Multiphysics ® ) to find the best set of metaatoms satisfying the DFMLs requirements described above (Fig. ).

Techniques: