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physics.app-ph2023★ 1 cited
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 AlScN film grown directly on a 4H-SiC substrate with an…
physics.app-ph2023
High-Efficiency Three-Wave and Four-Wave Phonon Mixing Via Electron-Mediated Nonlinearity in Semiconductor-Piezoelectric Heterostructures
Lisa Hackett, Matthew Koppa, Brandon Smith +7
We show that phononic frequency conversion can be enhanced by orders of magnitude in piezoelectric systems by heterogeneous integration of high-mobility semiconductor films. A lith…