Published December 15, 1997
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Two-photon absorption and broadband optical limiting with bis-donor stilbenes
Abstract
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.
Additional Information
© 1997 Optical Society of America Received August 12, 1997 This research was performed in part at the Jet Propulsion Laboratory, California Institute of Technology, as part of its Center for Space Microelectronics Technology and was supported by Wright-Patterson Air Force Base. Support at Caltech from the U.S. Office of Naval Research (ONR), the Center for Advanced Multifunctional Nonlinear Optical Polymers and Molecular Assemblies (which is supported by ONR), and the U.S. Air Force Office of Scientific Research, is gratefully acknowledged.Files
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