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

J. S. Schildkraut, T. L. Penner, C. S. Willand, Abraham Ulman

Research output: Contribution to journalArticle

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.

Original languageEnglish (US)
Pages (from-to)134-136
Number of pages3
JournalOptics Letters
Volume13
Issue number2
DOIs
StatePublished - 1988

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harmonic generations
monomers
dyes
acids
absorption spectra

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Absorption and second-harmonic generation of monomer and aggregate hemicyanine dye in Langmuir–Blodgett films. / Schildkraut, J. S.; Penner, T. L.; Willand, C. S.; Ulman, Abraham.

In: Optics Letters, Vol. 13, No. 2, 1988, p. 134-136.

Research output: Contribution to journalArticle

Schildkraut, J. S. ; Penner, T. L. ; Willand, C. S. ; Ulman, Abraham. / Absorption and second-harmonic generation of monomer and aggregate hemicyanine dye in Langmuir–Blodgett films. In: Optics Letters. 1988 ; Vol. 13, No. 2. pp. 134-136.
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