High-visibility interferometric measurement of the diffraction phase
JOSA A, Vol. 24, Issue 4, pp. 1148-1155 (2007)
http://dx.doi.org/10.1364/JOSAA.24.001148
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Abstract
We obtain the absolute phase in Fresnel diffraction for Gaussian beams by using a modified polarization Sagnac interferometer in which counterpropagating paths are spatially separated and labeled according to polarization. By erasing the polarization “which-path” information with an analyzing polarizer situated after the modified interferometer, we are able to regain interference and to precisely control the relative intensities of the diffracted and the reference beams. The resulting optimized visibility allows for a precise phase determination. This setup is very stable, requiring no active elements.
© 2007 Optical Society of America
OCIS Codes
(050.1940) Diffraction and gratings : Diffraction
(120.2650) Instrumentation, measurement, and metrology : Fringe analysis
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(120.5050) Instrumentation, measurement, and metrology : Phase measurement
ToC Category:
Instrumentation, Measurement, and Metrology
History
Original Manuscript: July 3, 2006
Revised Manuscript: November 24, 2006
Manuscript Accepted: November 29, 2006
Published: March 14, 2007
Citation
Salvador Barraza-Lopez, Daniel F. V. James, and Paul G. Kwiat, "High-visibility interferometric measurement of the diffraction phase," J. Opt. Soc. Am. A 24, 1148-1155 (2007)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-24-4-1148
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