Optical Limiting Thin Multilayer Films Based On Phase Transition In VO2
Marco Gandolfi, Andrea Tognazzi, B. Li, Gina Ambrosio, Rocio Camacho‐Morales, C. Baratto, Domenico de Ceglia, Alfonso Carmelo Cino, Dragomir N. Neshev, Costantino De Angelis · 2022 Sixteenth International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials) · 2022
We propose a self-activating optical limiter device based on a multilayer film structure featuring a dielectric substrate, a metallic and a Vanadium Dioxide (V02) film. By exploiting the phase transition in VO2, the device optical transmittivity is reduced by ~ 70% with a recovery time of 5 ns.