Picosecond time-gated Raman imaging using solid-state Raman shifters

Summary form only given. To develop a simple technique for imaging hidden objects embedded in or behind a scattering medium is challenging for many applications (e.g. biomedicine). One of the promising techniques developed is to use short pulse Raman gating in hydrogen for detection of unscattered photons, which carry the least degraded image information. For practical purposes however, Raman imaging with compact solid-state Raman shifters has obvious advantages compared with a H/sub 2/ shifter used so far. Ba(NO/sub 3/)/sub 2/ (Raman shift of 1047 cm/sup -1/) is well studied among other crystals.