One-step rainbow holographic interferometry

Physics

Scientific paper

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Holographic Interferometry, Image Reconstruction, Imaging Techniques, Rainbows, Diffraction Patterns, Exposure, Lenses, Speckle Patterns

Scientific paper

A one-step rainbow holographic technique is applied to holographic interferometry. The technique, which is based on the use of an imaging lens and a narrow slit between the recording plate and the object to obtain either pseudoscopic or orthoscopic holograms, has the advantages of white light readout, brighter images, less speckle noise, and better image quality. Variations of the one-step rainbow holographic process are presented which can perform multiwavelength and multislit interferometry. These techniques make it possible to have different holographic fringe patterns displayed in different colors. For multiwavelength technique, they are fringe patterns due to different physical effects, and for multislit technique, they are fringe patterns from different perspectives.

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