Figure 3
From: Metasurface-based broadband hologram with high tolerance to fabrication errors
Experimental set-up and measured results.
(a) The experimental set-up for the reconstruction of the holographic images. (b–e) Farfield intensity images obtained at the wavelength of 405 nm, 532 nm, 632.8 nm and 914 nm. The distances (D) between the hologram and the charge coupled device (CCD) are 6.8 cm, 6.0 cm, 6.0 cm and 3.3 cm, respectively. The white dashed lines denote the designed target maps’ boundary.
