Large two-photon absorption cross section: molecular tweezer as a new promising class of compounds for nonlinear optics.
We report the highest two-photon absorption cross-section to date, obtained for a molecular tweezer complex. Our analysis suggests that long-range charge-transfer interaction in three dimensions is the main source of this very large two-photon absorption cross section.
Centre for Theoretical and Computational Chemistry, Department of Chemistry, University of Tromsø, N-9037, Tromsø, Norway. swapanchem@yahoo.co.in
Swapan
S
Chakrabarti
Kenneth
K
Ruud