Two-photon absorbing organic chromophores for optical limiting

J. E. Ehrlich, X. L. Wu, I. Y.S. Lee, A. A. Heikal, Z. Y. Hu, H. Rockel, S. R. Marder, J. W. Perry

Research output: Contribution to journalConference articlepeer-review

25 Scopus citations

Abstract

Strong optical limiting and large two-photon absorptivities are reported for a class of bis-donor diphenylpolyene derivatives with varying polyene bridge lengths. These molecules exhibit strong optical limiting using nanosecond pulses over a broad spectral range. Bis(diphenylamino)stilbene exhibits a 90 nm red shift of its optical limiting band, and only a minimal shift of about 13 nm of its lowest one-photon electronic absorption band relative to bis(di-n-butylamino)stilbene. This suggests a potential for broadband optical limiting with high transparency using mixtures of such compounds. Pulse width dependent nonlinear transmission measurements suggest that two-photon pumped excited-state absorption contributes significantly to the limiting of nanosecond pulses.

Original languageEnglish (US)
Pages (from-to)9-15
Number of pages7
JournalMaterials Research Society Symposium - Proceedings
Volume479
StatePublished - Dec 1 1997
EventProceedings of the 1997 MRS Spring Meeting - San Francisco, CA, USA
Duration: Mar 31 1997Apr 2 1997

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