Figure 5.

Time-resolved THz phase-sensitive imaging through the scattering medium. (a) Schematic of imaging methodology. Inset: time-resolved reconstruction of the image corresponds to the measurement at t = 0 ps in panel (e). (b) Temporal evolution of output speckles corresponding to two different pixels (red and cyan dots shown in panel (a)) before deconvolution. (c) Temporal evolution of reconstructed THz pulse (after deconvolution) for two different pixels (red and cyan dots shown in panel (a)). (d) Structural Similarity (SSIM) index in the time-resolved reconstruction of an image object. (e) Reconstructed phase images at t = −0.52, 0, and 0.12 ps. The 6.4 × 6.4 mm² sample illumination area is spatially sampled at 200 μm resolution, corresponding to a number of pixels of 32 × 32 (see Video S1). Logo used with permission from the University of Sussex.