Nonlinear Photoluminescence in Gold

This lecture delves into the intriguing phenomenon of nonlinear photoluminescence in gold, exploring the generation of light by hot electrons and its applications. The instructor shares insights on the complex interplay between surface plasmons, electron temperature, and light emission, showcasing experiments with nanostructures and capacitive effects to control the nonlinear response. By manipulating the electron density through biasing, the lecture demonstrates how to actively modulate the photoluminescence efficiency. The discussion extends to potential applications in catalysis and photochemistry, highlighting the versatility of hot electrons in driving reactions. Through detailed experiments and simulations, the lecture offers a deep dive into the fundamental principles and practical implications of harnessing nonlinear photoluminescence in metallic systems.