Interference of co-propagating Rayleigh and Sezawa waves observed with micro-focussed Brillouin Light Scattering Spectroscopy

Moritz Geilen, Felix Kohl, Alexandra Stefanescu +3

We use micro-focussed Brillouin light scattering spectroscopy ($\mu$BLS) to investigate surface acoustic waves (SAWs) in a GaN layer on a Si substrate at GHz frequencies. Furthermore…