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Reconstructed Wavefronts and Communication Theory
A two-step imaging process discovered by Gabor involves photographing the Fresnel diffraction pattern of an object and using this recorded pattern, called a hologram, to construct an image of thisExpand
Wavefront Reconstruction with Diffused Illumination and Three-Dimensional Objects*
Three-dimensional holograms of transparencies produced in diffused light are of a quality comparable to pictures produced by conventional photography with incoherent light and have all the visual properties of the original scene. Expand
Wavefront Reconstruction with Continuous-Tone Objects*
Holograms and high-quality reconstructions have been made by using a two-beam interferometric technique. The extraneous twin image and other interfering terms have been eliminated. Two types ofExpand
Microscopy by Wavefront Reconstruction
Magnification by the wavefront-reconstruction imaging method is discussed. An analysis is given of the aberrations which arise in this type of imagery. Conditions are derived which lead toExpand
Quasi-holographic techniques in the microwave region
Various microwave processes, including synthetic-aperture radar and linearly frequency-modulated pulse compression, are described as analogs of holography. The holographic viewpoint often leads to aExpand
Optical data processing and filtering systems
The optical implementation of integral transforms which are of importance to communication theory is discussed; the general problems of optical filter synthesis and multichannel computation and data processing are introduced, followed by a discussion of potential applications. Expand
On the application of coherent optical processing techniques to synthetic-aperture radar
The form of the returning radar signals is discussed, as are the general reasons why optical processing of these signals might be attractive, and the role of a conical lens in simplifying reference-function realization is discussed. Expand
Holographic Imagery Through Diffusing Media
Space-invariant achromatic grating interferometers: theory.
The lesser known phenomenon of the imaging of a grating by a second grating is described from which the fringe forming capacity of multiple-grating interferometers stems; this can occur regardless of the coherence of the source. Expand
Image formation with an achromatic interferometer
Abstract The imaging characteristics of an achromatic interferometer employing diffraction gratings are described.