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- W4386875574 abstract "Wavefront shaping enables targeted delivery of coherent light into random-scattering media, such as biological tissue, by constructive interference of scattered waves. However, broadband waves have short coherence times, weakening the interference effect. Here, we introduce a broadband deposition matrix that identifies a single input wavefront that maximizes the broadband energy delivered to an extended target deep inside a diffusive system. We experimentally demonstrate that long-range spatial and spectral correlations result in a six-fold energy enhancement for targets containing more than 1500 speckle grains and located at a depth of up to ten transport mean free paths, even when the coherence time is an order of magnitude shorter than the diffusion dwell time of light in the scattering sample. In the broadband (fast decoherence) limit, enhancement of energy delivery to extended targets becomes nearly independent of the target depth and dissipation. Our experiments, numerical simulations, and analytic theory establish the fundamental limit for broadband energy delivery deep into a diffusive system, which has important consequences for practical applications." @default.
- W4386875574 created "2023-09-20" @default.
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- W4386875574 date "2023-09-17" @default.
- W4386875574 modified "2023-09-27" @default.
- W4386875574 title "Delivering Broadband Light Deep Inside Diffusive Media" @default.
- W4386875574 doi "https://doi.org/10.48550/arxiv.2309.09376" @default.
- W4386875574 hasPublicationYear "2023" @default.
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