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Proceedings Paper

Optical limiting and excited-state absorption in fullerene derivatives
Author(s): 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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Paper 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.

Paper Details

Date Published: 27 May 1996
PDF: 2 pages
Proc. SPIE 2714, 27th Annual Boulder Damage Symposium: Laser-Induced Damage in Optical Materials: 1995, (27 May 1996); doi: 10.1117/12.240399
Show Author Affiliations
Laura B. Smilowitz, Los Alamos National Lab. (United States)
Duncan W. McBranch, Los Alamos National Lab. (United States)
Victor I. Klimov, Los Alamos National Lab. (United States)
Aaron C. Koskelo, Los Alamos National Lab. (United States)
Jeanne M. Robinson, Los Alamos National Lab. (United States)
Benjamin R. Mattes, Los Alamos National Lab. (United States)
Jan C. Hummelen, Univ. of California/Santa Barbara (United States)
Fred Wudl, Univ. of California/Santa Barbara (United States)


Published in SPIE Proceedings Vol. 2714:
27th Annual Boulder Damage Symposium: Laser-Induced Damage in Optical Materials: 1995
Harold E. Bennett; Arthur H. Guenther; Mark R. Kozlowski; Brian Emerson Newnam; M. J. Soileau, Editor(s)

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