To explore and push the frontiers in ultrafast science and technology, using interdisciplinary understanding of the physics of lasers, semiconductors, and measurement technologies. Take this competitive know-how to understand and control fundamental charge and energy transport with atomic spatial and attosecond temporal resolution.
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Prof. Keller is increasingly concerned about “hostility” towards excellent women in leadership positions in STEMM (i.e. science, technology, engineering, mathematics and medicine) fields, which she sees as a key challenge for further progress in gender diversity. In this news item Prof. Keller summarizes her talk given first at CLEO USA 2023 as a plenary talk and more recently at an IEEE meeting in Italy.
Absorption of light adds energy to a material. The electrons inside the material can react collectively or independently to that energy. Here, the dominant reaction pattern should not depend on perspective. However, in compound semiconductors, surprisingly, divergent responses are obtained depending on which atomic constituent is consulted. Knowledge of both perspectives is necessary to optimize new materials for applications in electronics and optoelectronics.