Creating high-contrast patterns in multiple-scattering media via wavefront shaping
arXiv:2308.02891 · doi:10.1103/PhysRevLett.133.146901
Abstract
Wavefront shaping allows focusing light through or inside strongly scattering media, but the background intensity also increases due to long-range correlations, reducing the target's contrast. By manipulating non-local intensity correlations of scattered waves in a disordered system with input wavefront shaping, we create high-contrast patterns behind strongly scattering media and targeted energy delivery into a diffusive system with minimal change in the surrounding intensity. These are achieved by introducing the contrast operator and the difference operator, and utilizing their eigenstates to maximize the target-to-background intensity contrast and energy difference. This work opens the door to coherent control of non-local effects in wave transport for practical applications.
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- Upper bounds on focusing light through multimode fibers
- Joint control of coherent transmission, reflection, and absorption
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