Accession Number:

ADP006710

Title:

Resolution Limit of Photorefractive Spatial Light Modulators,

Descriptive Note:

Corporate Author:

ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (SWITZERLAND)

Personal Author(s):

Report Date:

1992-05-22

Pagination or Media Count:

4.0

Abstract:

The experimental set-up of our photorefractive incoherent to coherent converter is shown in figure 1. With two interfering argon-ion-laser beams Lambda514.5 nm we write a phase hologram into a photorefractive KNbO3 crystal. Using anisotropic Bragg diffraction 2 we choose the direction of the diffracted beam lambda632.8 nm perpendicular to the crystal surface. The input image is projected into the crystal plate anti-parallel to the diffracted beam. A short wavelength transmitting dichroitic beam splitter is used to separate the incoherent light from the diffracted beam.

Subject Categories:

  • Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE