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Infrared Photorefractive Polymers and Their Applications for Imaging

Science  02 Jan 1998:
Vol. 279, Issue 5347, pp. 54-57
DOI: 10.1126/science.279.5347.54

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Abstract

Photorefractive polymers with high diffraction efficiency in the visible and near-infrared regions of the electromagnetic spectrum have been developed. These polymers, which have a large dynamic range because of their high orientational birefringence, incorporate a dye designed to have a large dipole moment and a high linear polarizability anisotropy. Such polymers have enabled demonstrations of imaging through scattering media, using a holographic time-gating technique at a wavelength that is compatible with the transparency of biological tissues and with the emission of low-cost semiconductor laser diodes.

  • * To whom correspondence should be addressed. E-mail: kippelen{at}u.arizona.edu, srm{at}cco.caltech.edu, and nnp{at}u.arizona.edu

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