Propagation Dynamics of the THz Radiation Through a Dehydrated Tissue by the Pulse Time Domain Holography Method

A deeper penetration of terahertz (THz) waves into the biological tissue sample in vitro treated with the glycerol agent can be linked with the decrease of free-to-bound water ratio in sample. In this work, we applied a computational approach, which relies on the angular spectrum (AS) and Rayleigh-Sommerfeld convolution (RSC) methods and allows for describing the propagation of a complex amplitude of electromagnetic wave through the dispersive homogeneous medium, to demonstrate a time- and spatial-domain evolution of the THz pulse in a tissue, before and after its dehydration with the glycerol.