Frequency domain transformation optics for diffusive photon density waves’ cloaking

Mohamed Farhat, Sebastien Guenneau, Tania Puvirajesinghe, Fahhad Alharbi

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Abstract

We make use of a transformation optics technique to realize cloaking operation in the light diffusive regime, for spherical objects. The cloak requires spatially heterogeneous anisotropic diffusivity, as well as spatially varying speed of light and absorption. Analytic calculations of a photon’s fluence confirm the minor role of absorption in reduction of far-field scattering, and a monopole fluence field converging to a constant in the static regime in the invisibility region. The latter is in contrast to acoustic and electromagnetic cloaks, for which the field vanishes inside the core. These results are finally discussed in the context of mass diffusion, where cloaking can be achieved with a heterogeneous anisotropic diffusivity.

Original languageEnglish
Pages (from-to)24792-24803
Number of pages12
JournalOptics Express
Volume26
Issue number19
DOIs
Publication statusPublished - 17 Sep 2018

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ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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