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Efficient Continuous‐Wave Two‐Photon Absorption in para ‐Phenylene‐Type Polymers
Author(s) -
Hohenau A.,
Cagran C.,
Kranzelbinder G.,
Scherf U.,
Leising G.
Publication year - 2001
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/1521-4095(200109)13:17<1303::aid-adma1303>3.0.co;2-v
Subject(s) - materials science , two photon absorption , phenylene , absorption (acoustics) , polymer , cross section (physics) , absorption cross section , photon , optoelectronics , optics , composite material , physics , quantum mechanics , laser
Two‐photon materials —in particular those with well‐defined two‐photon absorption (2PA) with a high 2PA cross section—have potential applications in three‐dimensional data storage, for example. The 2PA cross section of ladder‐type poly( p ‐phenylene) is found here to be one of the highest reported for organic materials. Concentration‐ and temperature‐dependent measurements show that the absorption is a purely intra‐chain process and that the effective conjugation length has an important impact on the 2PA cross section—in accordance with theory.