Abstract

Modern techniques to control light scattering, like wavefront shaping (WFS), rely on the interference of scattered waves[1,2]. In WFS, the intensity of light is optimized, which is proportional to the absolute square of the scattering amplitude, ${\left|f\left({\widehat{k}}_2,{\widehat{k}}_1\right)\right|}^2$. Fully characterizing the scattering properties of any object requires the scattering amplitude of light .., that is a complex function of incident waves with direction ${\widehat{k}}_{in}$ and scattered waves with direction ${\widehat{k}}_{out}$. Since the information is embedded in the complex properties of the scattering amplitude, intensity-based WFS is not developed to its full potential.

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