Modulation of Negative Index Metamaterials in the Near-IR Range
arXiv:0708.2095 · doi:10.1063/1.2801701
Abstract
Optical modulation of the effective refractive properties of a "fishnet" metamaterial with a Ag/Si/Ag heterostructure is demonstrated in the near-IR range and the associated fast dynamics of negative refractive index is studied by pump-probe method. Photo excitation of the amorphous Si layer at visible wavelength and corresponding modification of its optical parameters is found to be responsible for the observed modulation of negative refractive index in near-IR.
11 figures, 4 figures