P Hariharan and B S Ramprasad 1972 J. Phys. E: Sci. Instrum. 5 976 doi:10.1088/0022-3735/5/10/013
P Hariharan and B S Ramprasad
Show affiliationsSubtraction of one complex spatial function from another can be accomplished holographically by shifting the phase of the reference beam by pi between the two exposures. A simple and reliable system for this purpose, which makes use of the fact that the beam from a gas laser is usually plane-polarized, is described, and its application to obtain the equivalent of a dark field with the frozen-fringe technique in holographic interferometry is demonstrated.
42.40.Kw Holographic interferometry; other holographic techniques
Issue 10 (October 1972)
P Hariharan and B S Ramprasad 1972 J. Phys. E: Sci. Instrum. 5 976
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