New Radiation Sources Through Generation and Resonant Enhancement of CurrentDriven Plasma Instabilities in Lower Dimensional Solid State Systems

摘要

In this program, we have identified theoretically the most promising candidatesfor current driven plasma instabilities (CDPI) in semiconductor based systems: the modulated quantum wires and lateral surface superlattices (LSSL). Feasibility of CDPI at much lower driving fields, as compared to the corresponding uniform systems, was established. Investigation of CDPI in a superconducting system was continued in close collaboration with an experimental group. We have also developed contacts with a number of experimental groups to stimulate parallel efforts for verification of CDPI in layered semiconductor systems. A Workshop was arranged with ARO sponsorship, held at Boston College in August 1994, which brought together Dr. Ciftan (ARO), our group, and the experimentalists to discuss future efforts and collaborations. (AN).