43 citations · 108 across the 7 of their papers we have counts for
7 papers
Exploring Weak Turbulence of Phonon and Magnon Beams in Magneto-Acoustic Ultrathin Films
Vladimir L. Safonov, Derek A. Bas, Andrew Franson +4
This study presents a simple theoretical model describing narrow envelope surface acoustic waves (phonons) and spin waves (magnons) in an ultrathin ferromagnetic film. Based on the…
Symmetry and nonlinearity of spin wave resonance excited by focused surface acoustic waves
Piyush J. Shah, Derek A. Bas, Abbass Hamadeh +6
The use of a complex ferromagnetic system to manipulate GHz surface acoustic waves is a rich current topic under investigation, but the high-power nonlinear regime is under-explore…
Giant Nonreciprocity of Surface Acoustic Waves enabled by the Magnetoelastic Interaction
Piyush J. Shah, Derek A. Bas, Ivan Lisenkov +3
Nonreciprocity, the defining characteristic of isolators, circulators and a wealth of other applications in radio/microwave communications technologies, is in general difficult to…
Photocurrents in Bi2Se3: bulk versus surface, and injection versus shift currents
Derek A. Bas, Rodrigo A. Muniz, Sercan Babakiray +3
Optical injection and detection of charge currents can complement conventional transport and photoemission measurements without the necessity of invasive contact that may disturb t…
Coherent control of injection currents in high-quality films of Bi2Se3
D. A. Bas, K. Vargas-Velez, S. Babakiray +5
Films of the topological insulator Bi2Se3 are grown by molecular beam epitaxy with in-situ reflection high-energy electron diffraction. The films are shown to be high-quality by X-…
Terahertz emission from ZnGeP2: Phase-matching, intensity and length scalability
Joseph D. Rowley, Derek A. Bas, Kevin T. Zawilski +2
Collinear phase-matched optical rectification is studied in ZnGeP pumped with near-infrared light. The pump-intensity dependence is presented for three crystal lengths (0.3,…
Terahertz Waveguiding in Silicon-Core Fibers
Derek A. Bas, Scott K. Cushing, John Ballato +1
We propose the use of a silicon-core optical fiber for terahertz (THz) waveguide applications. Finite-difference time-domain simulations have been performed based on a cylindrical…