Phase shifting grating-slit test with a cross slit
Optics Letters, Vol. 35, Issue 4, pp. 496-498 (2010)
http://dx.doi.org/10.1364/OL.35.000496
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Abstract
A general graphical convolution method for fringe analysis of testing methods that use a spatially incoherent light source is presented. Results are shown for the grating-slit test using optical narrow and cross slits. The convolution method shows that phase shifting grating-slit test can be done with the cross slit at the expense of a reduced fringe contrast ratio. A phase shifting measurement with a cross-slit modulator yields high measurement precision and validates our fringe contrast theory.
© 2010 Optical Society of America
OCIS Codes
(120.6650) Instrumentation, measurement, and metrology : Surface measurements, figure
(220.4840) Optical design and fabrication : Testing
ToC Category:
Optical Design and Fabrication
History
Original Manuscript: October 7, 2009
Revised Manuscript: December 11, 2009
Manuscript Accepted: December 16, 2009
Published: February 8, 2010
Citation
Chao-Wen Liang, Chien-Fu Ou, and Jose Sasian, "Phase shifting grating-slit test with a cross slit," Opt. Lett. 35, 496-498 (2010)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-35-4-496
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