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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Vol. 17, Iss. 1 — Jan. 1, 2000
  • pp: 63–67

Hyper-Rayleigh scattering in Gd-containing Langmuir–Blodgett superstructures

T. V. Murzina, G. B. Khomutov, A. A. Nikulin, Th. Rasing, and O. A. Aktsipetrov  »View Author Affiliations


JOSA B, Vol. 17, Issue 1, pp. 63-67 (2000)
http://dx.doi.org/10.1364/JOSAB.17.000063


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Abstract

Incoherent optical second harmonic (SH) generation, or hyper-Rayleigh scattering (HRS), is used to study the structure and properties of Gd/C18H36O2 multilayer Langmuir–Blodgett (LB) films. SH reflection spectra (in combination with linear absorption spectra), HRS indicatrices, thickness dependence, and wave polarization diagrams are measured for s-polarized fundamental radiation. The SH radiation is entirely diffuse but predominantly s polarized, with the maximum of the HRS indicatrix shifted by 8° relative to the specular direction, which is interpreted as being due to the contribution of a fluctuating quadrupole to the nonlinear-optical response of the films. The estimated correlation length of spatial fluctuations of the nonlinear-optical polarization in the film is ~400 nm. These properties are associated with an islandlike structure formed by Gd ions inside LB structural units.

© 2000 Optical Society of America

OCIS Codes
(190.0190) Nonlinear optics : Nonlinear optics
(190.4710) Nonlinear optics : Optical nonlinearities in organic materials
(240.0310) Optics at surfaces : Thin films

Citation
T. V. Murzina, G. B. Khomutov, A. A. Nikulin, Th. Rasing, and O. A. Aktsipetrov, "Hyper-Rayleigh scattering in Gd-containing Langmuir–Blodgett superstructures," J. Opt. Soc. Am. B 17, 63-67 (2000)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-17-1-63

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