Paper
27 May 1996 Optical limiting and excited-state absorption in fullerene derivatives
Laura B. Smilowitz, Duncan W. McBranch, Victor I. Klimov, Aaron C. Koskelo, Jeanne M. Robinson, Benjamin R. Mattes, Jan C. Hummelen, Fred Wudl
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Abstract
We present measurements of intensity-dependent transmission (optical limiting), Z-scan, and time resolved excited-state absorption, for several fullerenes and fullerene derivatives in solution, and for Co thin films and porous glass composites. Specific derivatives investigated include the isomers 5,6 pheny1-C-butyñc acid cholesteryl ester (5,6 PCBCR) and 6,6 PCBCR. We report optical limiting results for several wavelengths in the visible and near-infrared. Excited-state absorption is measured from 500-1000 nm with <1 picosecond resolution. The spectral and temporal information about the excited state can be used in combination with ground state measurements of absorption cross section to predict optical limiting behavior due to reverse saturable absorption. These predictions are confirmed by intensity dependent transmission measurements made at different wavelengths. We find that fullerenes functionalized for optimized solubility display enhanced optical limiting properties.
© (1996) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Laura B. Smilowitz, Duncan W. McBranch, Victor I. Klimov, Aaron C. Koskelo, Jeanne M. Robinson, Benjamin R. Mattes, Jan C. Hummelen, and Fred Wudl "Optical limiting and excited-state absorption in fullerene derivatives", Proc. SPIE 2714, 27th Annual Boulder Damage Symposium: Laser-Induced Damage in Optical Materials: 1995, (27 May 1996); https://doi.org/10.1117/12.240399
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KEYWORDS
Optical limiting

Absorption

Fullerenes

Thin films

Laser damage threshold

Solid state physics

Absorbance

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