Using phonon resonances as a route to all-angle negative refraction in the far-infrared region: the case of crystal quartz

R Rodrigues da Silva; R Macêdo da Silva; T Dumelow; J A P da Costa; S B Honorato; A P Ayala

doi:10.1103/PhysRevLett.105.163903

Using phonon resonances as a route to all-angle negative refraction in the far-infrared region: the case of crystal quartz

Phys Rev Lett. 2010 Oct 15;105(16):163903. doi: 10.1103/PhysRevLett.105.163903. Epub 2010 Oct 12.

Authors

R Rodrigues da Silva¹, R Macêdo da Silva, T Dumelow, J A P da Costa, S B Honorato, A P Ayala

Affiliation

¹ Departamento de Física, Universidade do Estado do Rio Grande do Norte, Costa e Silva, 59610-090 Mossoró RN, Brazil.

PMID: 21230974
DOI: 10.1103/PhysRevLett.105.163903

Abstract

We consider how all-angle negative refraction may be induced in anisotropic crystals by making use of the phonon response. We investigate the example of crystal quartz at far-infrared wavelengths. Reflection and transmission measurements confirm the expected behavior, and show relatively high transmission efficiency at frequencies at which negative refraction occurs.