Marco Rossetti

Marco Rossetti, Ph.D., is R&D manager at Exalos AG (Schlieren, Switzerland), and was a graduate student at Ecole Polytechnique Fédérale de Lausanne (EPFL)s Institute of Photonics and Quantum Electronics (Lausanne, Switzerland).

The silicon nitride photonic chip-based microresonator with the butt-coupled, 461 nm EXALOS laser diode.
Science & Research

EPFL researchers demonstrate visible laser diodes with a photonic chip microresonator

July 28, 2022
Swiss Federal Institute of Technology Lausanne (EPFL) researchers recently demonstrated a hybrid integrated laser using gallium nitride (GaN) ultraviolet (UV)/visible laser diodes...
FIGURE 1. Atomic-force microscopy shows a QD array (InAs on GaAs) for emission at 1300 nm (left). Schematic diagram of conduction band of a single QD, simplified for clarity, shows only two sets of energy levels: 'ground state' (GS) and 'excited state' (ES), analogous to the atomic s and p shells (right).

QUANTUM-DOT SOURCES: Quantum-dot development pursues new applications

Jan. 1, 2006
Despite limited gain and modulation response, quantum dots offer several advantages as optical sources for telecommunications and other industrial applications.