Optical configuration in speckle shear interferometry for slope change contouring with a twofold increase in sensitivity.
We present a novel optical configuration that yields a fringe pattern that represents the slope changes of a three-dimensional object with a twofold increase in sensitivity. The method offers controllable sensitivity over a wide range. We accomplish it by modifying the in-plane displacement sensitive configuration of speckle interferometry. The detailed theory and the experimental results are presented with a brief discussion on the limiting aspects of the configuration.
Santhanakrishnan
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T
Palanisamy
P K
PK
Sirohi
R S
RS