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Published January 2, 1998 | public
Journal Article

Infrared Photorefractive Polymers and Their Applications for Imaging

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.

Additional Information

© 1998 American Association for the Advancement of Science. Received 4 September 1997; accepted 10 November 1997. Supported by the U.S. Office of Naval Research (through the MURI Center CAMP), NSF, an international CNRS/NSF travel grant, the U.S. Air Force Office of Scientific Research, the U.S. Ballistic Missile Defense Organization, and a NATO travel grant. E.H. is a postdoctoral fellow of the Fund for Scientific Research–Flanders (Belgium). We thank A. Fort and M. Barzoukas from IPCMS (Strasbourg, France) for the dipole moment measurements, and P. M. Allemand for his help in the dielectric constant determination.

Additional details

Created:
September 28, 2023
Modified:
October 24, 2023