Title:
Resonant enhancement of two-photon absorption in substituted fluorene molecules
Resonant enhancement of two-photon absorption in substituted fluorene molecules
dc.contributor.author | Hales, Joel M. | en_US |
dc.contributor.author | Hagan, David J. | en_US |
dc.contributor.author | Van Stryland, Eric W. | en_US |
dc.contributor.author | Schafer, K. J. | en_US |
dc.contributor.author | Morales, A. R. | en_US |
dc.contributor.author | Belfield, Kevin D. | en_US |
dc.contributor.author | Pacher, P. | en_US |
dc.contributor.author | Kwon, O. | en_US |
dc.contributor.author | Zojer, Egbert | en_US |
dc.contributor.author | Brédas, Jean-Luc | en_US |
dc.contributor.corporatename | Georgia Institute of Technology. Center for Organic Photonics and Electronics | en_US |
dc.contributor.corporatename | University of Central Florida. School of Optics | en_US |
dc.contributor.corporatename | CREOL (Research center) | en_US |
dc.contributor.corporatename | University of Central Florida. Dept. of Chemistry | en_US |
dc.contributor.corporatename | University of Arizona. Dept. of Chemistry | en_US |
dc.contributor.corporatename | Georgia Institute of Technology. School of Chemistry and Biochemistry | en_US |
dc.date.accessioned | 2013-04-11T20:22:44Z | |
dc.date.available | 2013-04-11T20:22:44Z | |
dc.date.issued | 2004-08 | |
dc.description | © 2004 American Institute of Physics. The electronic version of this article is the complete one and can be found at: http://dx.doi.org/10.1063/1.1770726 | en_US |
dc.description | DOI: 10.1063/1.1770726 | en_US |
dc.description.abstract | The degenerate and nondegenerate two-photon absorption (2PA) spectra for a symmetric and an asymmetric fluorene derivative were experimentally measured in order to determine the effect of intermediate state resonance enhancement (ISRE) on the 2PA cross section δ. The ability to tune the individual photon energies in the nondegenerate 2PA (ND-2PA) process afforded a quantitative study of the ISRE without modifying the chemical structure of the investigated chromophores. Both molecules exhibited resonant enhancement of the nonlinearity with the asymmetric compound showing as much as a twentyfold increase in δ. Furthermore, the possibility of achieving over a one order of magnitude enhancement of the nonlinearity reveals the potential benefits of utilizing ND-2PA for certain applications. To model ISRE, we have used correlated quantum-chemical methods together with the perturbative sum-over-states (SOS) expression. We find strong qualitative and quantitative correlation between the experimental and theoretical results. Finally, using a simplified three-level model for the SOS expression, we provide intuitive insight into the process of ISRE for ND-2PA. | en_US |
dc.identifier.citation | Hales, Joel M. and Hagan, D. J. and Van Stryland, E. W. and Schafer, K. J. and Morales, A. R. and Belfield, K. D. and Pacher, P. and Kwon, O. and Zojer, Egbert and Brédas, Jean-Luc, "Resonant enhancement of two-photon absorption in substituted fluorene molecules," Journal of Chemical Physics, 121, 7, 3152-3160 (August 15 2004) | en_US |
dc.identifier.doi | 10.1063/1.1770726 | |
dc.identifier.issn | 0021-9606 | |
dc.identifier.uri | http://hdl.handle.net/1853/46788 | |
dc.publisher | Georgia Institute of Technology | en_US |
dc.publisher.original | American Institute of Physics | en_US |
dc.subject | Two-photon processes | en_US |
dc.subject | Quantum chemistry | en_US |
dc.subject | Chemical structure | en_US |
dc.subject | Nonlinear optics | en_US |
dc.subject | Excited states | en_US |
dc.subject | Molecular configurations | en_US |
dc.subject | Fluorine | en_US |
dc.title | Resonant enhancement of two-photon absorption in substituted fluorene molecules | en_US |
dc.type | Text | |
dc.type.genre | Article | |
dspace.entity.type | Publication | |
local.contributor.author | Brédas, Jean-Luc | |
local.contributor.corporatename | Center for Organic Photonics and Electronics | |
relation.isAuthorOfPublication | 4d846669-7bb3-480a-8267-9b1cd9ff38d2 | |
relation.isOrgUnitOfPublication | 43f8dc5f-0678-4f07-b44a-edbf587c338f |
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