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Journal of the Optical Society of America B

Journal of the Optical Society of America B


  • Editor: G. I. Stegeman
  • Vol. 23, Iss. 1 — Jan. 1, 2006
  • pp: 67–74

Determination of the nonlinear refractive index of lyotropic mixtures with and without ferrofluid doping: a time-resolved Z-scan experiment in millisecond time scales

S. Alves, F. L.S. Cuppo, and A. M. Figueiredo Neto  »View Author Affiliations

JOSA B, Vol. 23, Issue 1, pp. 67-74 (2006)

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Z-scan experiments were carried out on micellar isotropic lyotropic mixtures with and without ferrofluid doping. Ferrofluid doping, even in small quantities, strongly modifies the sample absorption properties. A method to reduce the Z-scan data is proposed to calculate the nonlinear refractive index of high- and fast-absorber samples. The usual Z-scan data treatment procedure, with the usual transmittance normalization, gives the correct sign, order of magnitude, and linear behavior of n 2 with the ferrofluid grain concentration. However, the difference from the absolute values of n 2 calculated here and those obtained using the usual Z-scan data treatment procedure increases with the concentration of ferrofluid grains. The origin of this nonlinear optical response of the samples is assumed to be mainly from a thermal origin, in which the micelles are indirectly heated by contact with the ferrofluid grains.

© 2006 Optical Society of America

OCIS Codes
(160.3710) Materials : Liquid crystals
(190.4400) Nonlinear optics : Nonlinear optics, materials
(190.4720) Nonlinear optics : Optical nonlinearities of condensed matter

ToC Category:
Nonlinear Optics

S. Alves, F. L. Cuppo, and A. M. Figueiredo Neto, "Determination of the nonlinear refractive index of lyotropic mixtures with and without ferrofluid doping: a time-resolved Z-scan experiment in millisecond time scales," J. Opt. Soc. Am. B 23, 67-74 (2006)

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