title: Two-photon absorption at telecommunications wavelengths in a dipolar chromophore with a pyrrole auxiliary donor and thiazole auxiliary acceptor.
abstract: Three new dipolar chromophores based on a diaklyaminophenyl donor, a pyrrole auxiliary donor, a thiazole auxiliary acceptor, and strong heterocyclic acceptors have been synthesized. For one of these compounds we have measured a very large non-degenerate two-photon cross section of ca. 1500 GM in the near-IR telecommunications range using a pump-probe technique. Calculations indicate the cross section for degenerate two-photon absorption is likely to be ca. 60% of this value.
authors.affiliation: School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, 30332-0400, USA.
authors.forename: Luca
authors.initials: L
authors.lastname: Beverina
authors.forename: Jie
authors.initials: J
authors.lastname: Fu
authors.forename: Amalia
authors.initials: A
authors.lastname: Leclercq
authors.forename: Egbert
authors.initials: E
authors.lastname: Zojer
authors.forename: Peter
authors.initials: P
authors.lastname: Pacher
authors.forename: Stephen
authors.initials: S
authors.lastname: Barlow
authors.forename: Eric W
authors.initials: EW
authors.lastname: Van Stryland
authors.forename: David J
authors.initials: DJ
authors.lastname: Hagan
authors.forename: Jean-Luc
authors.initials: JL
authors.lastname: Brédas
authors.forename: Seth R
authors.initials: SR
authors.lastname: Marder