Fig. 5.

Validation of the PT-OCT analytical model over an A-scan in a multi-layered heterogeneous sample. (A) Theoretical (blue) and experimental (red) A-scan of a human brown hair 80 μm deep inside a scattering silicone phantom. (B) Average theoretical and experimental photothermal signal for different hair depths. Each hair depth was produced by a separate simulation or recorded on a separate B-scan. The signal has decreased by 50% when the hair is 220 μm in depth inside the phantom. (C) Experimental average OCT intensity for a section of scatterer at different depths inside the sample. The signal has decreased by 50% when the scatterers are 355 μm in depth inside the phantom.