Stroboscopic white-light interference microscopy
Applied Optics, Vol. 45, Issue 23, pp. 5840-5844 (2006)
http://dx.doi.org/10.1364/AO.45.005840
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Abstract
The principle of stroboscopic motion freezing of oscillating objects extends directly to interference microscopes that use coherence as part of the measurement principle. Analysis shows, however, that the fringe contrast loss for out-of-plane motion in stroboscopic interferometry is a wavelength-dependent phenomenon, which can alter the apparent nominal center wavelength of the white-light source. As in monochromatic systems, the key adjustable parameter is the duty cycle, equal to the product of the vibrational frequency and the pulse width. This theoretical study provides detailed graphs of expected errors as a function of the duty cycle, including fringe contrast loss, apparent wavelength shift, and measurement error.
© 2006 Optical Society of America
OCIS Codes
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(120.3940) Instrumentation, measurement, and metrology : Metrology
(120.6650) Instrumentation, measurement, and metrology : Surface measurements, figure
(150.6910) Machine vision : Three-dimensional sensing
History
Original Manuscript: October 6, 2005
Manuscript Accepted: October 31, 2005
Virtual Issues
Vol. 1, Iss. 9 Virtual Journal for Biomedical Optics
Citation
Peter de Groot, "Stroboscopic white-light interference microscopy," Appl. Opt. 45, 5840-5844 (2006)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-45-23-5840
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