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Electronic and vibronic contributions to two-photon absorption of molecules with multi-branched structures
KTH, Superseded Departments, Biotechnology.ORCID iD: 0000-0003-0007-0394
KTH, Superseded Departments, Biotechnology.ORCID iD: 0000-0002-1763-9383
2000 (English)In: Journal of Chemical Physics, ISSN 0021-9606, E-ISSN 1089-7690, Vol. 113, no 17, 7055-7061 p.Article in journal (Refereed) Published
Abstract [en]

The electronic and vibronic contributions to the two-photon absorption of a series molecules with multi-branched structures have been studied using ab initio response theory. The results indicate that the electronic coupling between different branches alone cannot explain the experimental finding of a strong enhancement of the two-photon absorption cross section over the single branch structure, whereas it is predicted that vibronic contributions can play an important role in this respect. It is shown that for multi-branched molecules the use of circularly polarized light can increase the two-photon absorption cross section by a factor of 1.5 over linearly polarized light excitation.

Place, publisher, year, edition, pages
2000. Vol. 113, no 17, 7055-7061 p.
Keyword [en]
2-photon absorption, cross-sections, spectrum, benzene, mechanisms, oligomers, design
Identifiers
URN: urn:nbn:se:kth:diva-20130ISI: 000090132900004OAI: oai:DiVA.org:kth-20130DiVA: diva2:338823
Note
QC 20100525Available from: 2010-08-10 Created: 2010-08-10 Last updated: 2017-12-12Bibliographically approved

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Luo, YiÅgren, Hans

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