1.
Opt Lett
; 36(9): 1641-3, 2011 May 01.
Artigo
em Inglês
| MEDLINE
| ID: mdl-21540954
RESUMO
We demonstrate how micromachined photonic crystals can be used to negatively refract terahertz frequency light. The photonic crystals, which are constructed from conventional dielectric materials, manipulate the incident beam via interaction with their photonic bands. Consequently, we show that different components of a broadband beam incident on the structure may be positively or negatively refracted, depending upon its frequency and that the structure can be used as an effective spectral filter of THz radiation.