title: Extended squaraine dyes with large two-photon absorption cross-sections.
abstract: Extended bis(donor)-substituted squaraine chromophores exhibit very high two-photon cross-sections (as high as 33 000 GM) in the near-IR; these can be attributed to the combination of large transition dipoles with small detuning energies. The modulus of the third-order nonlinear optical susceptibility at 1.3 mum has been found to be 7.0 x 10-11 esu for one of these chromophores.
authors.affiliation: School of Chemistry and Biochemistry and Center for Organic Photonics and Electronics, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, USA.
authors.forename: Sung-Jae
authors.initials: SJ
authors.lastname: Chung
authors.forename: Shijun
authors.initials: S
authors.lastname: Zheng
authors.forename: Toru
authors.initials: T
authors.lastname: Odani
authors.forename: Luca
authors.initials: L
authors.lastname: Beverina
authors.forename: Jie
authors.initials: J
authors.lastname: Fu
authors.forename: Lazaro A
authors.initials: LA
authors.lastname: Padilha
authors.forename: Arianna
authors.initials: A
authors.lastname: Biesso
authors.forename: Joel M
authors.initials: JM
authors.lastname: Hales
authors.forename: Xiaowei
authors.initials: X
authors.lastname: Zhan
authors.forename: Karin
authors.initials: K
authors.lastname: Schmidt
authors.forename: Aijun
authors.initials: A
authors.lastname: Ye
authors.forename: Egbert
authors.initials: E
authors.lastname: Zojer
authors.forename: Stephen
authors.initials: S
authors.lastname: Barlow
authors.forename: David J
authors.initials: DJ
authors.lastname: Hagan
authors.forename: Eric W
authors.initials: EW
authors.lastname: Van Stryland
authors.forename: Yuanping
authors.initials: Y
authors.lastname: Yi
authors.forename: Zhigang
authors.initials: Z
authors.lastname: Shuai
authors.forename: Giorgio A
authors.initials: GA
authors.lastname: Pagani
authors.forename: Jean-Luc
authors.initials: JL
authors.lastname: Brédas
authors.forename: Joseph W
authors.initials: JW
authors.lastname: Perry
authors.forename: Seth R
authors.initials: SR
authors.lastname: Marder