Figure 4: Holographic image reconstruction for different wavelengths.
From: Three-dimensional optical holography using a plasmonic metasurface
Recorded images for wavelengths of (a) λ1=670 nm, (b) λ2=810 nm and (c) λ3=950 nm. (d) Distance of the reconstructed holographic image from the sample surface. The red stars denote the value calculated from angular spectrum method, the square dots represent the experimental measurement and the blue dotted curve is calculated from the simple inverse relationship between the wavelength and z position.
