Mid-infrared Second Harmonic Generation in SiGe Quantum Wells

Autor: Eva Olsson, Michele Virgilio, Jonas Allerbeck, Virginia Falcone, Daniele Brida, Jacopo Frigerio, Andrea Mancini, L. Baldassarre, Michele Ortolani, M. De Seta, Daniel Chrastina, Lunjie Zeng, C. Ciano, Andrea Ballabio, Joel Kuttruff
Rok vydání: 2021
Předmět:
Zdroj: 2021 46th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz).
DOI: 10.1109/irmmw-thz50926.2021.9567195
Popis: Inversion-symmetry breaking for second-harmonic generation in centrosymmetric Si and Ge is artificially realized with a pair of asymmetric-coupled SiGe quantum wells. Laser spectroscopy experiments demonstrate a nonlinear susceptibility four orders of magnitude larger than that of natural nonlinear materials in the visible range.
Databáze: OpenAIRE