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ANDREA TOGNAZZI

Optical limiters relying on VO2 phase transition in thin multilayer films

  • Authors: Gandolfi, Marco; Tognazzi, Andrea; Li, Bohan; Morales, Rocio Camacho; Ambrosio, Gina; Baratto, Camilla; de Ceglia, Domenico; Neshev, Dragomir N.; De Angelis, Costantino
  • Publication year: 2022
  • Type: Poster pubblicato in volume
  • OA Link: http://hdl.handle.net/10447/575298

Abstract

We propose a self-activating optical limiter device based on phase transition of vanadium dioxide in thin multilayer films. The optimal geometry reduces the transmitted power by ~ 70% and shows a recovery time of 10 ns.