My interests lie in three areas of semiconductor-laser device physics: high-power coherent edge-emitting diode lasers, high-power coherent surface-emitting diode lasers and high-efficiency, high-power quantum cascade lasers (QCLs). The first two are based on one- and two-dimensional photonic-crystal (PhC) structures, respectively, that ensure both long-range spatial coherence and stable operation under continuous-wave (CW) operation. My QCL-related research focuses on maximizing the CW wall-plug efficiency, in the mid-infrared (IR) wavelength range (4-10 microns), via designs employing three key interrelated concepts: direct resonant-tunneling injection, photon-induced carrier transport and carrier-leakage suppression.
High-power, CW-operating QCLs emitting in the mid-IR have a wide range of applications from standoff detection of chemical agents and explosives to free-space communications and directed infrared countermeasures. High-power coherent diode lasers have many applications such as pumps of solid-state lasers for efficient harmonic generation of blue/green light, and near-IR free-space communications.
For my publication record, please see at Links my Google Scholar profile and updated list of publications, patents and invited presentations.