Experimental characterization of the distribution of resonance widths in chaotic reverberation chambers

Abstract

Here we investigate how to characterize chaotic reverberation chambers on a spectral basis by experimentally investigating the distribution of resonance widths and comparing it with a theoretical prediction in the weak coupling limit of open chaotic cavities. Those predictions are deduced from the Random Matrix Theory and depend on two parameters, namely the modal overlap and an effective number of open channels. We find a good agreement between those predictions and the distribution of the extracted widths even below the Lowest Useable Frequency in case of sufficiently chaotic reverberation chambers.