Two-photon absorption at telecommunications wavelengths in a dipolar chromophore with a pyrrole auxiliary donor and thiazole auxiliary acceptor.
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.
Beverina
Luca
L
School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, 30332-0400, USA.
Fu
Jie
J
Leclercq
Amalia
A
Zojer
Egbert
E
Pacher
Peter
P
Barlow
Stephen
S
Van Stryland
Eric W
EW
Hagan
David J
DJ
Brédas
Jean-Luc
JL
Marder
Seth R
SR