Dynamic Correction of a Distorted Image Using a Photorefractive Polymeric Composite

We demonstrate, for the first time, the dynamic correction of aberrated images in real-time using a polymeric composite with fast response times. The current novel experimental design is capable of restoring a phase aberrated, image carrying laser beam, to nearly its original quality. The ability to reconstruct images in real-time is demonstrated through the changing of the aberrating medium at various speeds. In addition, this technique allows for the correction of images in motion, demonstrated through the oscillatory movement of the resolution target. We also have demonstrated that important parameters of the materials in the study such as response times, diffraction efficiencies and optical gains all retain high figures of merit values under the current experimental conditions. © 2004 Optical Society of America

Beam Cleanup and Image Restoration with a Photorefractive Polymeric Composite

We demonstrate, for the first time to our knowledge, the use of a photorefractive polymeric composite to clean a phase-distorted laser beam and reconstruct a badly distorted image. Advantageous qualities including relatively high figures of merit, ease of processability, and low cost make this class of materials attractive when compared with their inorganic crystalline counterparts. In addition, we used four-wave-mixing and holographic techniques to obtain an internal diffraction efficiency of ∼31% at 54.5 V/μm and a two-beam-coupling gain coefficient of F = 17 cm -1 at 54.5 V/p.m under our experimental conditions. © 2004 Optical Society of America

Media 2: Fast, compact, autonomous holographic adaptive optics

Originally published in Optics Express on 21 April 2014 (oe-22-8-9432