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Paper detail

Total light absorption in graphene

We demonstrate that 100% light absorption can take place in a single patterned sheet of doped graphene. General analysis shows that a planar array of small lossy particles exhibits full absorption under critical-coupling conditions provided the cross section of each individual particle is comparable to the area of the lattice unit-cell. Specifically, arrays of doped graphene nanodisks display full absorption when supported on a substrate under total internal reflection, and also when lying on a dielectric layer coating a metal. Our results are relevant for infrared light detectors and sources, which can be made tunable via electrostatic doping of graphene.

preprint2011arXivOpen access
Sukosin ThongrattanasiriFrank H. L. KoppensF. Javier Garcia de Abajo
cond-mat.mes-hallcond-mat.mtrl-sciphysics.optics
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Sukosin ThongrattanasiriFrank H. L. KoppensF. Javier Garcia de Abajo

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