Advanced Materials

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20_24b/2008Inside Front Cover: Enhanced Two-Photon Absorption of Organic Chromophores: Theoretical and Experimental Assessments (Adv. Mater. 24/2008)

Two-photon absorption (TPA) offers a rich playground for development of novel optical multifunctional technologies. Related experimental and theoretical methodologies are reviewed by Claudine Katan, Sergei Tretiak, and co-workers on p. 4641, with special attention to sources of errors that yield improper evaluation of TPA cross sections. Trends leading to large TPA responses are illustrated and thoroughly analyzed through a set of typical organic TPA-fluorophores including branched systems.

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