Spiral interferogram analysis

Discontinued Devices LC-R 3000 Spatial Light Modulators
Microscopy Misc.: Speckle / Characterization / Metrology
Published on:
Authors: Alexander Jesacher, Severin Fürhapter, Stefan Bernet, and Monika Ritsch-Marte
Abstract:

“Interference microscopy using spatial Fourier filtering with a vortex phase element leads to interference fringes that are spirals rather than closed rings. Depressions and elevations in the optical thickness of the sample can be distinguished immediately by the sense of rotation of the spirals. This property allows an unambiguous reconstruction of the object’s phase profile from one single interferogram. We investigate the theoretical background of “spiral interferometry” and suggest various demodulation techniques based on the processing of one single interferogram or multiple interferograms.”

Restricted Access

Publication: Journal of the Optical Society of America A
Issue/Year: JOSA A, Vol. 23, Issue 6, pp. 1400-1409 (2006)
DOI: 10.1364/JOSAA.23.001400
Link: https://doi.org/10.1364/JOSAA.23.001400

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