Advances in Engineering Advances in Engineering features breaking research judged by Advances in Engineering advisory team to be of key importance in the Engineering field. Papers are selected from over 10,000 published each week from most peer reviewed journals.
JOSA B, Vol. 31, Issue 5, pp. 1000-1005 (2014).
Ryohei Hokari, Yoshiaki Kanamori, Kazuhiro Hane.
Department of Nanomechanics, Tohoku University, Aoba 6-6-01 Aramaki, Aoba-ku, Sendai, Miyagi 980-8579, Japan.
Abstract
Fabrication of plasmonic metamaterials having electromagnetically induced transparency (EIT)-like characteristics with sharp and strong spectral responses is a challenging task for device applications at near-infrared wavelengths. EIT-like effects in silver metamaterials consisting of dipole resonators and quadrupole resonators were experimentally demonstrated, and their characteristics were evaluated. Optical characteristics of the metamaterials could be controlled by the gap distance between the two resonators. At wavelengths around 820 nm, EIT-like effects with transmittance between 72% and 28% were observed for the metamaterials with gap distances between 13 and 69 nm. At a gap of 13 nm, a maximum modulation depth of 2.29 was achieved.
© 2014 Optical Society of America.
