Optical limiting and excited-state absorption in fullerene derivatives
Conference
·
OSTI ID:552028
- Los Alamos National Lab., NM (United States); and others
The authors 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 C{sub 60} thin films and porous glass composites. Specific derivatives investigated include the isomers 5,6 phenyl-C{sub 61}-butyric acid cholesteryl ester (5,6 PCBCR) and 6,6 PCBCR. They 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. The authors find that fullerenes functionalized for optimized solubility display enhanced optical limiting properties.
- Research Organization:
- International Society for Optical Engineering, Washington, DC (United States)
- OSTI ID:
- 552028
- Report Number(s):
- CONF-9510106--Vol.2714
- Country of Publication:
- United States
- Language:
- English
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