S-band acoustoelectric amplifier utilizing an ultra-high thermal conductivity heterostructure for low self-heating

Lisa Hackett, Xingyu Du, Michael Miller +9

Here we report on an acoustoelectric slab waveguide heterostructure for phonon amplification using a thin Al${}_{0.58}$Sc${}_{0.42}$N film grown directly on a 4H-SiC substrate with an…