Fig. 3: CAFAB simulation and measurement for the wavelengths of 455, 517 and 637 nm. | Nature Communications

Fig. 3: CAFAB simulation and measurement for the wavelengths of 455, 517 and 637 nm.

From: A metasurface-based full-color circular auto-focusing Airy beam transmitter for stable high-speed underwater wireless optical communications

Fig. 3

a Left part is the x–z section of the Airy beam propagation trajectory simulation with the z = 0 plane as the metasurface plane, right part are the spectra of RGB lasers in log scale. In. stands for intensity. Simulation of x–y RGB Airy field distribution (b) at position z = f (white dash), (c) at the focus position z = 4.6 mm, 4.7 mm, 4.8 mm, respectively (yellow dash). d Experimental measurement of RGB Airy field distribution at the position z = f.

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