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Off-Resonant Two-Photon Absorption Cross-Section Enhancement of an Organic Chromophore on Gold Nanorods

Year: 2013
Type: article
Abstract: Surface-plasmon-initiated interference effects of polyelectrolyte-coated gold nanorods on the two-photon absorption of an organic chromophore were investigated. With polyelectrolyte bearing gold nanorods of 2,4,6 and 8 layers, the role of the plasmonic fields as function of distance on such effects was examined. An unusual distance dependence was found: enhancements in the two-photon cross-section were at a minimum at an intermediate distance, then rose again at a further distance. The observed values of enhancement were compared to theoretical predictions using finite element analysis and showed good agreementdue to constructive and destructive interference effects.
DOI: 10.1021/jz4000774
Authors: Sean T. Sivapalan, Jarrett H. Vella, Timothy K. Yang, Matthew J. Dalton, Joy E. Haley, Thomas M. Cooper, Augustine M. Urbas, Loon-Seng Tan, Catherine J. Murphy
Institutions: University of Illinois Urbana-Champaign, United States Air Force Research Laboratory, Wyle (United States), Wright-Patterson Air Force Base, U.S. Air Force Research Laboratory Sensors Directorate, Wright Laboratory, U.S. Air Force Research Laboratory Materials and Manufacturing Directorate
Language: English
Open Access status: green
OpenAlex ID: W1998718894
FWCI: 0.945
Cites: 22
Cited by: 20
Related to: 10