Induced absorption in fullerene-doped solid xerogel matrices

✍ Scribed by J. Schell; D. Ohlmann; B. Hönerlage; R. Levy; M. Joucla; J.L. Rehspringer; J. Serughetti; C. Bovier

• Publisher: Elsevier Science
• Year: 1998
• Tongue: English
• Weight: 377 KB
• Volume: 36
• Category: Article
• ISSN: 0008-6223
• DOI: 10.1016/s0008-6223(98)00061-x

✦ Synopsis

In this paper measurements of induced absorption and its dynamics in Cm-doped solid xerogel matrices are presented. The measurements are performed in a pump-test geometry using picosecond pulses generated from a frequency doubled modelocked Nd:YAG laser. An induced absorption leading to optical limiting was observed. Outstanding optical limiting qualities for single shot excitation were found. Furthermore, limiting dynamics are studied. A decrease of the initial laser-induced absorption with a time constant of I50 picoseconds was observed. This is attributed to a transition from excited singlet to triplet electronic states in the CeO molecule. A long-living component due to the resulting triplet state population was also observed.