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