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Proceedings Paper

Polarization plane rotator used as a phase stepping device in a 2-channel shearing speckle interferometer
Author(s): Peter A. A. M. Somers; Nandini Bhattacharya
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Paper Abstract

A polarization phase stepping method is presented based on the use of a polarization plane rotator that establishes a relative phase shift between two counter-rotating circularly polarized beams. The phase step can be made relatively accurate, since it just depends on the accuracy with which the rotator is manufactured, and not on its orientation. The phase stepping method has been implemented in a single-camera two-channel shearing speckle interferometer, with two optical channels, and a relative phase step of π/2 between them.

Paper Details

Date Published: 13 June 2005
PDF: 10 pages
Proc. SPIE 5856, Optical Measurement Systems for Industrial Inspection IV, (13 June 2005); doi: 10.1117/12.612562
Show Author Affiliations
Peter A. A. M. Somers, Delft Univ. of Technology (Netherlands)
Nandini Bhattacharya, Delft Univ. of Technology (Netherlands)

Published in SPIE Proceedings Vol. 5856:
Optical Measurement Systems for Industrial Inspection IV
Wolfgang Osten; Christophe Gorecki; Erik L. Novak, Editor(s)

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