Fig. 1: Overview principle of our method to enhance the delivery of light energy deep into the medium. | Light: Science & Applications

Fig. 1: Overview principle of our method to enhance the delivery of light energy deep into the medium.

From: Enhance the delivery of light energy ultra-deep into turbid medium by controlling multiple scattering photons to travel in open channels

Fig. 1

a Classification of three types of back-scatted photons, ξSS, ξMS1, and ξMS2 photons. b A point-by-point scanning strategy to construct the huge reflection matrix. c The theory of (1) time-reversal operator to separate ξSS, ξMS1, and ξMS2 photons; (2) wavefront shaping to focus light within the medium

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