SPATIAL-FREQUENCY FILTERING IN HOLOGRAPHIC IMAGE-RECONSTRUCTION

Citation
N. Bolognini et al., SPATIAL-FREQUENCY FILTERING IN HOLOGRAPHIC IMAGE-RECONSTRUCTION, Applied optics, 34(2), 1995, pp. 243-248
Citations number
10
Categorie Soggetti
Optics
Journal title
ISSN journal
00036935
Volume
34
Issue
2
Year of publication
1995
Pages
243 - 248
Database
ISI
SICI code
0003-6935(1995)34:2<243:SFIHI>2.0.ZU;2-W
Abstract
We show that reconstructing a hologram by its object beam leads to spa tial filtering, namely, to the suppression of spatial frequency compon ents that are perpendicular to the plane of the recording beams. We co nduct experiments by rotating the transparencies of Ronchi gratings an d crossed gratings and measuring the corresponding diffraction efficie ncies. Good agreement is found with a theory based on image reconstruc tion with a beam that does not quite satisfy the Bragg condition.