Two-photon absorption and broadband optical limiting with bis-donor stilbenes
J.E. EhrlichJet Propulsion Laboratory and Beckman Institute, California Institute of Technology, Pasadena, California 91109Xiaolin WuJet Propulsion Laboratory and Beckman Institute, California Institute of Technology, Pasadena, California 91109I.-Y. S. LeeJet Propulsion Laboratory and Beckman Institute, California Institute of Technology, Pasadena, California 91109Z.-Y. HuJet Propulsion Laboratory and Beckman Institute, California Institute of Technology, Pasadena, California 91109Harald RöckelJet Propulsion Laboratory and Beckman Institute, California Institute of Technology, Pasadena, California 91109Seth R. MarderJet Propulsion Laboratory and Beckman Institute, California Institute of Technology, Pasadena, California 91109Joseph W. PerryJet Propulsion Laboratory and Beckman Institute, California Institute of Technology, Pasadena, California 91109
1997en
ABI
Аннотация
Large two-photon absorptivities are reported for symmetrical bis-donor stilbene derivatives with dialkylamino or diphenylamino groups. These molecules exhibit strong optical limiting of nanosecond pulses over a broad spectral range in the visible. Relative to bis(di-n-butylamino)stilbene, bis(diphenylamino)stilbene exhibits a 90-nm red shift of its optical limiting band but only a minimal shift of ~13 nm of its lowest one-photon electronic absorption band. Mixtures of these compounds offer an unprecedented combination of broad optical limiting bandwidth and high linear transparency.
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