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Optics Letters

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  • Vol. 13, Iss. 2 — Feb. 1, 1988
  • pp: 134–136

Absorption and second-harmonic generation of monomer and aggregate hemicyanine dye in Langmuir–Blodgett films

J. S. Schildkraut, T. L. Penner, C. S. Willand, and A. Ulman  »View Author Affiliations


Optics Letters, Vol. 13, Issue 2, pp. 134-136 (1988)
http://dx.doi.org/10.1364/OL.13.000134


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Abstract

Absorption spectra and second-harmonic generation of Langmuir–Blodgett monolayers containing a hemicyanine dye with a large second-order hyperpolarizability are reported. The dye is found to be in the form of H aggregates in a pure-dye film and mostly monomeric in a 1:4 dye–arachidic acid film. This observation explains a report in the literature that mixed dye–arachidic acid films display greater second-harmonic generation efficiency than a pure-dye film. It may also be a factor in the reported failure of second-harmonic generation to increase quadratically with the number of layers in noncentrosymmetric multilayer films.

© 1988 Optical Society of America

History
Original Manuscript: August 19, 1987
Manuscript Accepted: October 30, 1987
Published: February 1, 1988

Citation
J. S. Schildkraut, T. L. Penner, C. S. Willand, and A. Ulman, "Absorption and second-harmonic generation of monomer and aggregate hemicyanine dye in Langmuir–Blodgett films," Opt. Lett. 13, 134-136 (1988)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-13-2-134


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