Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1789142 | Current Applied Physics | 2009 | 5 Pages |
Abstract
We investigate the change of higher diffraction order images in holographic image storage and reconstruction process. In experiments, an s-polarized Ar+ laser (488.0Â nm) was used to record permanent grating in the dye-doped liquid crystal, 4,4â²-n-entylcyanobiphenyl (5CB) doped with 1Â wt% methyl-red (MR), at a small incident angle. Higher diffraction order images were observed when the signal beam was focused in front of and behind the film. Then the film was illuminated by an s-polarized He-Ne laser (632.8Â nm) in the direction perpendicular to the surface. The higher diffraction order images were reconstructed. A theory about the change of higher diffraction order images is developed, which is in good agreement with experimental results. The results show that the higher diffraction order provides a useful method for optical information processing.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Dewei Gong, Zhongxiang Zhou, Chunfeng Hou, Yongyuan Jiang, Hao Tian,