A standard gradient-index fiber enables highly efficient multimode coherent perfect absorption with reflectivities below 1% via self-imaging and minimal intermodal dispersion.
Massively degenerate coherent perfect absorber for arbitrary wave- fronts,
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Massively Degenerate Coherent Perfect Absorption in Gradient-Index Fibers
A standard gradient-index fiber enables highly efficient multimode coherent perfect absorption with reflectivities below 1% via self-imaging and minimal intermodal dispersion.