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Extended Squaraine Dyes with Large Two-Photon Absorption Cross-Sections
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Arianna Biesso,† Joel M. Hales,† Xiaowei Zhan,† Karin Schmidt,† Aijun Ye,† Egbert Zojer,†§ Stephen Barlow,† David J. Hagan,‖ Eric W. Van Stryland,‖ Yuanping Yi,# Zhigang Shuai,# Giorgio A. Pagani,‡ Jean-Luc Brédas,† Joseph W. Perry,† and Seth R. Marder*†
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 μm has been found to be 7.0 × 10-11 esu for one of these chromophores.
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This article has been cited by 21 ACS Journal articles (5 most recent appear below).
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- Published In Issue November 15, 2006
- Received August 1, 2006
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