Prof. Jerry Moloney, University of Arizona
"In this talk, I will describe how a systematic inclusion of Hartree-Fock field and energy renormalization terms together with higher order correlations, account for all microscopic processes involved in light-semiconductor interactions. The theory will be shown to provide a one-to-one agreement with gain measurements across many classes of semiconductor quantum well materials and establishes the limitations of the famous ABC laws that phenomenologically account respectively for defect, spontaneous emission radiative and Auger losses. My talk will include examples of experiments on a broad class semiconductor disk lasers where the microscopic theory was used to design a host of novel CW and mode-locked laser sources with applications to compact extreme UV, room temperature tunable THz, artificial Guidestar, offset-free mid-IR frequency comb and angle tunable multi-wavelength sources. Recently, the theory was extended to a novel class of quasi-2D Transition Metal Dichalcogenide (TMDC) materials that exhibit huge hundreds of meV bandgap renormalization and have prominent room temperature excitonic features. Recent high field physics applications include many-body enhancement of high harmonic generation in these materials with plans to extend to topologically nontrivial materials."