Fig. 1

Schematic illustration of the FACE-SPCM system. A two-dimensional spectrally encoded projection is created using a pair of orthogonal optical frequency combs modulated via acousto-optic deflectors. The complex-field information of the scene is embedded into a temporal signal through a coaxial heterodyne holographic setup. This configuration allows for efficient recovery of amplitude and phase details in dynamic environments, as demonstrated by the authors, such as microfluidic flows, live biological tissues, and chemical processes. AODx (AODy) acousto-optic deflector along the x (y) axis, SM scattering medium, PD single-pixel photodetector. Figure reproduced from Wu et al.¹, available under CC-BY license