Ultrafast time-gated imaging techniques

The propagation properties of an ultrafast laser pulse through breast tissues are simulated in this paper. It has been shown that the use of time-gated imaging techniques could greatly improve the contrast of transmission image of the breast. Then several time-gated imaging techniques are discussed, and a new time-gated imaging technique -- the use of transient stimulated Raman scattering for both rapid time gating and amplification of the image -- is proposed.