Phys.org March 4, 2019
A team of researchers in the US (Yale University, Missouri University of Science & Technology) used a spatial light modulator (SLM) and a CCD camera to analyze an opaque material that is made of a layer of white paint, biological tissue, fog, paper, and milk. The SLM tailors the laser beam incident on the front surface of the material, and the CCD camera records the intensity profiles behind it. The resulting beam was more concentrated, with more light per volume inside and behind the opaque material. The method works for any opaque medium that does not absorb light. The findings are important for light–matter interactions and imaging deep-tissue imaging and optogenetics…read more. TECHNICAL ARTILCEÂ
By shaping its spatial wavefront, a laser beam can propagate through a strongly scattering medium without lateral diffusion. Credit: Yale University