Optical limiting processes in derivatized fullerenes and porphyrins/phthalocyanines

R. Kohlman, V. Klimov, X. Shi, M. Grigorova, B. R. Mattes, D. McBranch, H. Wang, F. Wudl, J. L. Nogues, W. Moreshead

Research output: Contribution to journalConference article

3 Citations (Scopus)

Abstract

We review our results from spectral studies of the ultrafast excited-state absorption in fullerenes and derivatized fullerenes. These results allow determination of both the spectral response of reverse saturable absorption (RSA) nonlinearities such as optical limiting (OL) in fullerenes, and the dynamical response for different morphologies. We have investigated the effects of thin film and various sol-gel glass environments on the nanosecond OL and femtosecond dynamics of derivatized fullerenes. These data provide evidence of decay pathways which compete with the intersystem crossing to a triplet from the initial singlet states. With appropriate processing, however, the OL response of derivatized-fullerene sol-gel glasses can be enhanced to approach that of the same molecule in solution, while significantly enhancing the optical damage threshold. The optical limiting of these derivatized fullerenes is compared with that of various porphyrin and phthalocyanine molecules.

Original languageEnglish
Pages (from-to)237-242
Number of pages6
JournalMaterials Research Society Symposium - Proceedings
Volume488
DOIs
Publication statusPublished - 1997
EventProceedings of the 1997 MRS Fall Meeting - Boston, MA, USA
Duration: Nov 30 1997Dec 4 1997

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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    Kohlman, R., Klimov, V., Shi, X., Grigorova, M., Mattes, B. R., McBranch, D., Wang, H., Wudl, F., Nogues, J. L., & Moreshead, W. (1997). Optical limiting processes in derivatized fullerenes and porphyrins/phthalocyanines. Materials Research Society Symposium - Proceedings, 488, 237-242. https://doi.org/10.1557/proc-488-237