Early Holography

Damage Detection Using Holography and Interferometry

“…2 The important feature of the silver-halide emulsion was that it could store multiple holograms or speckle photographs of the surface of an object recorded at different times. 3 The reconstructions from the different holographic snapshots of the time varying surface could then be accomplished at the same time. The reconstructed beams interfered, and non-uniformities or anomalies in the interference patterns were identified with damage.…”

The measurement of flow-induced surface displacement on a compliant surface by optical holographic interferometry

“…In holography, a laser light ray (L) moving in the positive z-direction (i.e., approaching the photographic plate) with a velocity c may be expressed in the form (Coolier, et al 1971):…”

Theory of x-ray holography including phase and amplitude contrast and finite transfer functions

“…Much of this theory is treated by a number of earlier authors [1,2,3] but none with the particular choice of issues that we wish to ad dress. These are those mentioned plus numerical reconstruction from a digitized hologram and of course application to the soft x-ray spectral range.…”