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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 21 — Oct. 12, 2009
  • pp: 18843–18851

Spatially resolved refractive index profiles of electrically switchable computer-generated holographic gratings

Gianluigi Zito, Andrea Finizio, and Sergio De Nicola  »View Author Affiliations

Optics Express, Vol. 17, Issue 21, pp. 18843-18851 (2009)

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We describe a spatially resolved interferometric technique combined with a phase reconstruction method that provides a quantitative two-dimensional profile of the refractive index and spatial distribution of the optical contrast between the on-off states of electrically switchable diffraction gratings as a function of the external electric field. The studied structures are holographic gratings optically written into polymer/liquid crystal composites through single-beam spatial light modulation by means of computer-generated holograms. The electro-optical response of the gratings is also discussed. The diffraction efficiency results to be dependent on the incident light polarization suggesting the possibility to develop polarization dependent switching devices.

© 2009 OSA

OCIS Codes
(090.1760) Holography : Computer holography
(090.2880) Holography : Holographic interferometry
(230.6120) Optical devices : Spatial light modulators

ToC Category:

Original Manuscript: August 4, 2009
Revised Manuscript: September 24, 2009
Manuscript Accepted: September 28, 2009
Published: October 2, 2009

Gianluigi Zito, Andrea Finizio, and Sergio De Nicola, "Spatially resolved refractive index profiles of electrically switchable computer-generated holographic gratings," Opt. Express 17, 18843-18851 (2009)

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