Experimental investigation of 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.