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Optics Letters

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  • Vol. 36, Iss. 19 — Oct. 1, 2011
  • pp: 3807–3809

Scanning monochromatic spatial low-coherence interferometer

Xiaoke Wan and Jian Ge  »View Author Affiliations


Optics Letters, Vol. 36, Issue 19, pp. 3807-3809 (2011)
http://dx.doi.org/10.1364/OL.36.003807


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Abstract

A scanning spatial low-coherence interferometer (S-LCI), using an off-axis converging single wavelength laser beam as the probe, resembles a conventional or temporal low-coherence interferometer (T-LCI) in signal formation and data processing. However, the S-LCI is advantageous over a T-LCI with the combination of angle resolving and depth discrimination capabilities. The S-LCI is demonstrated by measuring the angle dependent phase shifts among the multiple reflections of a glass plate, with incident angles accurately scaled in the Fourier domain. The refractive index and geometric thickness of the glass plate are simultaneously produced in this one-step measurement.

© 2011 Optical Society of America

OCIS Codes
(030.1640) Coherence and statistical optics : Coherence
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(120.5710) Instrumentation, measurement, and metrology : Refraction
(160.4760) Materials : Optical properties

ToC Category:
Instrumentation, Measurement, and Metrology

History
Original Manuscript: July 14, 2011
Revised Manuscript: August 29, 2011
Manuscript Accepted: August 31, 2011
Published: September 23, 2011

Citation
Xiaoke Wan and Jian Ge, "Scanning monochromatic spatial low-coherence interferometer," Opt. Lett. 36, 3807-3809 (2011)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-36-19-3807


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