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Sensors 2016, 16(11), 1933; doi:10.3390/s16111933

Full-Field Optical Coherence Tomography Using Galvo Filter-Based Wavelength Swept Laser

1
School of Electronics Engineering, College of IT Engineering, Kyungpook National University, 80 Daehak-ro, Bukgu, 41566 Daegu, Korea
2
Oz-Tec Co. Ltd., Office 901, IT Convergence Industrial Building, 47 Gyeongdae-ro, 17-gil, Bukgu, 41566 Daegu, Korea
*
Author to whom correspondence should be addressed.
Academic Editor: Gonzalo Pajares Martinsanz
Received: 30 September 2016 / Revised: 15 November 2016 / Accepted: 15 November 2016 / Published: 17 November 2016
(This article belongs to the Special Issue Imaging: Sensors and Technologies)
View Full-Text   |   Download PDF [3190 KB, uploaded 17 November 2016]   |  

Abstract

We report a wavelength swept laser-based full-field optical coherence tomography for measuring the surfaces and thicknesses of refractive and reflective samples. The system consists of a galvo filter–based wavelength swept laser and a simple Michelson interferometer. Combinations of the reflective and refractive samples are used to demonstrate the performance of the system. By synchronizing the camera with the source, the cross-sectional information of the samples can be seen after each sweep of the swept source. This system can be effective for the thickness measurement of optical thin films as well as for the depth investigation of samples in industrial applications. A resolution target with a glass cover slip and a step height standard target are imaged, showing the cross-sectional and topographical information of the samples. View Full-Text
Keywords: OCT; wavelength swept laser; full-field OCT; large area scanning; galvo filter OCT; wavelength swept laser; full-field OCT; large area scanning; galvo filter
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Shirazi, M.F.; Kim, P.; Jeon, M.; Kim, J. Full-Field Optical Coherence Tomography Using Galvo Filter-Based Wavelength Swept Laser. Sensors 2016, 16, 1933.

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