Details

Autor(en) / Beteiligte

• Andkjær, Jacob
• Sigmund, Ole

Titel

Topology optimized low-contrast all-dielectric optical cloak

Ist Teil von

• Applied physics letters, 2011-01, Vol.98 (2), p.021112-021112-3

Ort / Verlag

American Institute of Physics

Erscheinungsjahr

2011

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• A systematic methodology for designing low-contrast all-dielectric cloaks operating in the optical range is presented. Topology optimization is used to find the layout of standard dielectric material that minimizes the norm of the scattered field in the surroundings of the cloak. Rotational symmetries are exploited to optimize for multiple angles based on the solution for a single angle of incidence. For a few discrete angles of incidences (1-4) the cloaking is shown to be nearly perfect in a limited frequency range, and even for a rotational symmetric design, cloak and object appear smaller than the noncloaked object.