Article

Realizing Optical Magnetism from Dielectric Metamaterials

Sandia National Laboratory, Albuquerque, New Mexico 87185, USA.
Physical Review Letters (Impact Factor: 7.51). 03/2012; 108(9):097402. DOI: 10.1103/PhysRevLett.108.097402
Source: PubMed

ABSTRACT

We demonstrate, for the first time, an all-dielectric metamaterial composite in the midinfrared based on micron-sized, high-index tellurium dielectric resonators. Dielectric resonators are desirable compared to conventional metallodielectric metamaterials at optical frequencies as they are largely angular invariant, free of Ohmic loss, and easily integrated into three-dimensional volumes. Measurements and simulation provide evidence of optical magnetism, which could be used for infrared magnetic mirrors, hard or soft surfaces, and subwavelength cavities.

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    • ",[10]), with the promise of bypassing the high Ohmic losses of metallic structures. Experimental validations of the concept were provided in the form of reflectarrays operating at mid-infrared frequencies in [11] and at visible wavelengths in [12]. The nano-structure described in this last paper was proposed by our group and is illustrative of the challenges to be solved on the way to extreme scaling of DRAs to visible wavelengths, as described in the following. "
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