Magnetic Purcell factor in wire metamaterials

We present an experimental study of the magnetic Purcell effect in finite arrays of the wire metamaterial. By directly measuring the spatial-frequency map of the Purcell factor, we explicitly demonstrate how the Purcell factor is enhanced at the Fabry-Perot resonances of the wire metamaterial block in microwave frequency range. The experimental results are in a good agreement with theoretical and numerical estimations. (C) 2014 AIP Publishing LLC.