Applied Physics Letters
All optical switching based on intensity induced absorption in C60
Fryad Zeki Henari, Karl H. Cazzini, Declan N. Weldon, Werner Josef Blau
Abstract
In this letter, we demonstrate that the strong reverse saturation which has been observed at high intensity in a C60 solution, is also manifest at a low intensity. The behavior fits well to a rate equation model based on a six level system with known photophysical parameters. Furthermore, we demonstrate that it can be utilized to generate optical switching and bistability.