Labyrinth-based left-handed metamaterials and subwavelength focusing of electromagnetic waves

Ekmel Ozbay; Irfan Bulu; Humeyra Caglayan

doi:10.1117/12.649548

1 March 2006 Labyrinth-based left-handed metamaterials and subwavelength focusing of electromagnetic waves

Ekmel Ozbay, Irfan Bulu, Humeyra Caglayan

Proceedings Volume 6128, Photonic Crystal Materials and Devices IV; 612813 (2006) https://doi.org/10.1117/12.649548
Event: Integrated Optoelectronic Devices 2006, 2006, San Jose, California, United States

Abstract

We propose and demonstrate a new labyrinth based metamaterial structure that solves two major problems related to the split-ring resonator based structures. One of the problems related to the split-ring resonator structure is the bianisotropy, and the other problem is the electric coupling to the magnetic resonance of the split-ring resonator structure. These two problems introduce difficulties in obtaining isotropic left-handed metamaterial mediums. The new structure that we propose here solves both of these problems. We further show that in addition to the magnetic resonance, when combined with a suitable wire medium, the structure that we propose exhibits left-handed transmission band. A two-dimensional metamaterial based on the labyrinth structure is used to study imaging of a point source. Our experimental results show that it is possible to image the point source with half widths as small as λ/4 by using the labyrinth based metamaterial.

Citation Download Citation

Ekmel Ozbay, Irfan Bulu, and Humeyra Caglayan "Labyrinth-based left-handed metamaterials and subwavelength focusing of electromagnetic waves", Proc. SPIE 6128, Photonic Crystal Materials and Devices IV, 612813 (1 March 2006); https://doi.org/10.1117/12.649548

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