Figure 3
From: Geometric metasurface enabling polarization independent beam splitting
Characterization of diffraction power and illustration of measurement setup. (a) The optical setup to characterize our metasurface beam splitter. Diffraction angles vary depending on the incident wavelength, i.e. θ532 ≈ 24° and θ635 ≈ 28.5°. (b,c) Measured beam powers by diffraction orders, incident polarizations and wavelengths. Diffraction orders of m = +1 and m = −1 correspond to the left and right spot of the encoded image, respectively. All measured powers are normalized to each zeroth-order power.
