We introduce a concept to control the spectral and dichroic properties of metamaterials. The approach is based on anisotropic metal nanoparticles and on varying their mutual orientation in a periodic lattice. Even seemingly inconsequential changes in particle ordering strongly modify the dichroic properties of the arrays and result in either very narrow resonances or ultrabroad extinction ranges. The results arise from long-range diffractive coupling between the particles, as determined by the dependence of the array unit cell size on particle ordering.
© 2011 Optical Society of America
Original Manuscript: April 18, 2011
Revised Manuscript: May 23, 2011
Manuscript Accepted: May 27, 2011
Published: June 15, 2011
Hannu Husu, Jouni Mäkitalo, Roope Siikanen, Goëry Genty, Henna Pietarinen, Joonas Lehtolahti, Janne Laukkanen, Markku Kuittinen, and Martti Kauranen, "Spectral control in anisotropic resonance-domain metamaterials," Opt. Lett. 36, 2375-2377 (2011)