Enhanced bandwidth and reduced dispersion through stacking multiple optical metamaterials

Matthew D. Escarra, Sukosin Thongrattanasiri, William O. Charles, Anthony J. Hoffman, Viktor A. Podolskiy, Claire F. Gmachl

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


All-semiconductor, highly anisotropic metamaterials provide a straightforward path to negative refraction in the mid-infrared. However, their usefulness in applications is restricted by strong frequency dispersion and limited spectral bandwidth. In this work, we show that by stacking multiple metamaterials of varying thickness and doping into one compound metamaterial, bandwidth is increased by 27% over a single-stack metamaterial, and dispersion is reduced.

Original languageEnglish (US)
Pages (from-to)14990-14998
Number of pages9
JournalOptics Express
Issue number16
StatePublished - Aug 1 2011

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics


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