Abstract
The use of fiberoptic imaging structures for holographic investigations of displacement and vibration is demonstrated. Image-plane holograms are formed at the proximal output end of an imaging multifiber. Investigations using a cw laser for double-exposed holograms of a cantilever beam, as well as time-average vibration studies, were conducted. Pairs of double-pulsed holograms of dynamic events were recorded, one through the fiber bundle, the other in a conventional manner as a standard of reference. The fringes of both holograms were practically identical. The ability to perform measurements in holographic interferometry through optical fibers should lead to further developments in medical endoscopy as well as industrial applications.
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