Thermally controllable reduction of absorption and extinction of a dielectric sphere by an InSb coating

Hamad M. Alkhoori, Akhlesh Lakhtakia

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

The absorption and extinction efficiencies of a sphere covered by InSb coating and illuminated by an incident plane wave in the terahertz gap were computed. Numerical results shows that these efficiencies, for some core materials and in some spectral regimes, can be reduced by adjusting the temperature. This, reduction of absorption and extinction by the InSb coating is not possible for air and metallic spheres, but it is possible for dielectric spheres. Furthermore, the InSb coating is more effective in absorption reduction for more dissipative dielectric materials, whereas it is more effective in extinction reduction for less dissipative dielectric materials.

Original languageEnglish
Article number168992
JournalOptik
Volume260
DOIs
Publication statusPublished - Jun 2022

Keywords

  • Electromagnetic absorption
  • Electromagnetic scattering
  • Terahertz gap

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

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