title: 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.
authors.forename: J E
authors.initials: JE
authors.lastname: Ehrlich
authors.forename: X L
authors.initials: XL
authors.lastname: Wu
authors.forename: I Y
authors.initials: IY
authors.lastname: Lee
authors.forename: Z Y
authors.initials: ZY
authors.lastname: Hu
authors.forename: H
authors.initials: H
authors.lastname: Röckel
authors.forename: S R
authors.initials: SR
authors.lastname: Marder
authors.forename: J W
authors.initials: JW
authors.lastname: Perry