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Improving Interferometry Instrumentation by Mixing Stereoscopy for 2π Ambiguity Solving

Improving Interferometry Instrumentation by Mixing Stereoscopy for 2π Ambiguity Solving

Avi Karsenty, Yaron Lichtenstadt, Sagi Naeim, Yoel Arieli
Copyright: © 2017 |Volume: 6 |Issue: 2 |Pages: 13
ISSN: 2156-1737|EISSN: 2156-1729|EISBN13: 9781522515067|DOI: 10.4018/IJMTIE.2017070104
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MLA

Karsenty, Avi, et al. "Improving Interferometry Instrumentation by Mixing Stereoscopy for 2π Ambiguity Solving." IJMTIE vol.6, no.2 2017: pp.43-55. http://doi.org/10.4018/IJMTIE.2017070104

APA

Karsenty, A., Lichtenstadt, Y., Naeim, S., & Arieli, Y. (2017). Improving Interferometry Instrumentation by Mixing Stereoscopy for 2π Ambiguity Solving. International Journal of Measurement Technologies and Instrumentation Engineering (IJMTIE), 6(2), 43-55. http://doi.org/10.4018/IJMTIE.2017070104

Chicago

Karsenty, Avi, et al. "Improving Interferometry Instrumentation by Mixing Stereoscopy for 2π Ambiguity Solving," International Journal of Measurement Technologies and Instrumentation Engineering (IJMTIE) 6, no.2: 43-55. http://doi.org/10.4018/IJMTIE.2017070104

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Abstract

Phase measurements obtained by high-coherence interferometry are restricted by the 2π ambiguity to height differences smaller than λ/2. A further restriction considers linear and nonlinear aberrations evolving in most interferometric systems due to the CCD-type array detectors. The authors present a new method to overcome the 2π ambiguity in interferometry when using a stereoscopic approach. In this method, a reconstructed wavefront reflected from an object was propagated into two different angles to obtain two different images of the object. These two different images were subsequently processed by stereo algorithms to resolve the 2π ambiguity. Such a method of wavefront propagation may enable several applications such as focusing and resolving the 2π ambiguity, as described in the article.