43 citations · 108 across the 7 of their papers we have counts for
4 papers · 1 filter
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…