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Two-step spatial phase-shifting radial shearing interferometery with circular gratings |
Optics Letters, Vol. 38, Issue 7, pp. 1116-1118 (2013)
http://dx.doi.org/10.1364/OL.38.001116
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Abstract
This Letter presents a simple radial shearing interferometery with circular gratings to measure the radial first-order derivative of arbitrary wavefront phase. Two spatial phase-shifted radial shearing interferograms can be simultaneously obtained by the system, and a two-step phase-shifting algorithm with arbitrary phase-shift value is proposed for phase retrieval. The measurement for spherical wave has shown the feasibility and validity, and the optical system is used to measure the radial first-order derivative of projection wavefront phase of a propane flame with plane incident wave.
© 2013 Optical Society of America
OCIS Codes
(050.1950) Diffraction and gratings : Diffraction gratings
(050.5080) Diffraction and gratings : Phase shift
(070.6110) Fourier optics and signal processing : Spatial filtering
(100.5070) Image processing : Phase retrieval
(120.5050) Instrumentation, measurement, and metrology : Phase measurement
ToC Category:
Diffraction and Gratings
History
Original Manuscript: January 17, 2013
Manuscript Accepted: February 23, 2013
Published: March 25, 2013
Citation
Jia Wang, Yang Song, Zhen-hua Li, and An-zhi He, "Two-step spatial phase-shifting radial shearing interferometery with circular gratings," Opt. Lett. 38, 1116-1118 (2013)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-38-7-1116
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