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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Henry M. Van Driel
  • Vol. 24, Iss. 6 — Jun. 1, 2007
  • pp: 1291–1297

Light scattering from anisotropic block copolymer grains in a planar waveguide

Zhuangxi Fang, Maurice C. Newstein, Bruce A. Garetz, Jeffrey D. Wilbur, and Nitash P. Balsara  »View Author Affiliations


JOSA B, Vol. 24, Issue 6, pp. 1291-1297 (2007)
http://dx.doi.org/10.1364/JOSAB.24.001291


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Abstract

A theory is presented to treat depolarized light scattering in a planar waveguide consisting of an ordered block copolymer thin film on a fused-silica substrate. In guided-wave depolarized light scattering (GWDLS), light is coupled into a transverse-magnetic mode of the film, which acts as a planar waveguide. Scattering of the incident light from randomly oriented, optically anisotropic grains results in the coupling of light into propagating transverse-electric (TE) modes in the sample. A dyadic Green’s function approach is employed to derive a quantitative relationship between the total optical power of the scattered TE wave and the average size of the grains. The grain size thus calculated from GWDLS experiments is consistent with the position space results of atomic force microscopy.

© 2007 Optical Society of America

OCIS Codes
(160.5470) Materials : Polymers
(290.5820) Scattering : Scattering measurements
(310.2790) Thin films : Guided waves

ToC Category:
Materials

History
Original Manuscript: September 6, 2006
Manuscript Accepted: February 6, 2007
Published: May 17, 2007

Citation
Zhuangxi Fang, Maurice C. Newstein, Bruce A. Garetz, Jeffrey D. Wilbur, and Nitash P. Balsara, "Light scattering from anisotropic block copolymer grains in a planar waveguide," J. Opt. Soc. Am. B 24, 1291-1297 (2007)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-24-6-1291

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