title: Metallic subwavelength structures for a broadband infrared absorption control.
abstract: We present a method to control the absorption of a resonator by using a subwavelength structure consisting of thin metallic plates that behaves as a metamaterial film. We demonstrate the ability to tailor the conductivity of such a metallic subwavelength structure to achieve a resonator with the desired impedance matching for the mid-infrared range. This approach provides for broadband, as well as broad-angle, enhanced absorption. Theoretical analyses, as well as experimental results of the optical properties of a metallic NiCr structure at 8-12 microm spectral range are introduced.
authors: Optical Engineering Laboratory, Faculty of Mechanical Engineering, Technion-Israel Institute of Technology, Haifa, Israel.
authors: Gabriel
authors: G
authors: Biener
authors: Avi
authors: A
authors: Niv
authors: Vladimir
authors: V
authors: Kleiner
authors: Erez
authors: E
authors: Hasman