Acta Optica Sinica, Volume. 4, Issue 7, 600(1984)
Ultrahigh-speed photography of interference patterns and shadowgraphs by using encoding gratings
A laser beam is split into several sub-beams, each of which has different delay time and is encoded by using a grating placed in different azimuth. After converging by means of a series of reflectors, these sub- beams become one beam again which is used to diagnose the object through holographic interference and holographic shadowgraph. When the hologram is decoded, a set of interference patterns or shadowgraphs corresponding to different moments can be obtained.
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XU YUGUANG, CHEN SHOUHUA, RONG ZHONGHUA. Ultrahigh-speed photography of interference patterns and shadowgraphs by using encoding gratings[J]. Acta Optica Sinica, 1984, 4(7): 600