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Single-shot surface 3D imaging by optical coherence factor

Xu, Jian and Cao, Ruizhi and Cua, Michelle and Yang, Changhuei (2020) Single-shot surface 3D imaging by optical coherence factor. Optics Letters, 45 (7). pp. 1734-1737. ISSN 0146-9592.

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We report a single-shot three-dimensional (3D) topographical imaging method, optical coherence factor (OCF) imaging, which uses optical coherence as the contrast mechanism to acquire the surface height (z-direction) information of an object. A 4-f imaging system records the light field reflected from the surface of the object. The illumination of the imaging system comes from a laser source with the optical coherence length comparable to the depth of field (DoF) of the optical system. Off-axis holographic recording is used to retrieve the coherence factor from the interference fringes, which is then converted to z-direction information. In this experiment, we validate our 3D imaging results comparing them to axial scanning full-field optical coherence tomography images. We also analyze the contrast mechanism of OCF and show that it is able to provide additional information over conventional coherent and incoherent imaging using the same imaging setup. This single-shot computationally efficient method may have potential applications in industrial quality control inspection.

Item Type:Article
Related URLs:
URLURL TypeDescription
Xu, Jian0000-0002-4743-2471
Cao, Ruizhi0000-0003-3385-446X
Yang, Changhuei0000-0001-8791-0354
Additional Information:© 2020 Optical Society of America. Received 29 November 2019; revised 20 February 2020; accepted 21 February 2020; posted 25 February 2020 (Doc. ID 384551); published 18 March 2020. We thank Cheng Shen and Dr. Yan Liu for their help with sample preparation, and Dr. Baptiste Blochet for helpful discussions. Funding: Donna and Benjamin M. Rosen Bioengineering Center, California Institute of Technology (9900050). The authors declare no conflicts of interest.
Group:Rosen Bioengineering Center
Funding AgencyGrant Number
Donna and Benjamin M. Rosen Bioengineering Center9900050
Issue or Number:7
Record Number:CaltechAUTHORS:20200416-121840939
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Official Citation:Jian Xu, Ruizhi Cao, Michelle Cua, and Changhuei Yang, "Single-shot surface 3D imaging by optical coherence factor," Opt. Lett. 45, 1734-1737 (2020)
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:102576
Deposited By: Tony Diaz
Deposited On:16 Apr 2020 20:34
Last Modified:16 Apr 2020 20:34

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