Snake Photon Imaging in Thick Tissues in Visible and Near Infrared Radiation Spectral Region

Abstract

Time-resolved transillumination techniques have been used to image opaque1-6 and partially absorbing7-10 objects hidden in various random media. When ultrashort laser pulses are incident on a slab of scattering medium the transmitted pulses consist of a ballistic (coherent) component11-12, a diffuse component and a snake component1. Using time-resolved detection techniques, the snake photons can be separated from the diffuse component and used to construct the image of an object hidden in a scattering medium with different optical properties. Recently, it has been shown that thick tissue imaging is possible using snake photons in the visible region10.