Holographic Interferometry
- 1 February 1966
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 37 (2) , 642-649
- https://doi.org/10.1063/1.1708231
Abstract
A new method of interferometry, based upon holographic photography, is described. The interferometer uses a common optical path in which beam separation is achieved by two exposures separated in time. Its significant advantages are (1) accurate alignment and precision optical elements are not required, (2) differential interferometry, used to measure small changes in either optical path or position of complex subjects, is easily performed, (3) a complete three‐dimensional record of the interference phenomena is obtained, permitting post‐exposure focusing and examination from various directions, and (4) the technique is well‐suited to the recording of transient as well as stationary phenomena. Experimental examples of its use with aerodynamic phenomena are given.This publication has 12 references indexed in Scilit:
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