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

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 a...

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Bibliographic Details
Published in:Sensors (Basel, Switzerland) Switzerland), 2016-11, Vol.16 (11), p.1933
Main Authors: Shirazi, Muhammad Faizan, Kim, Pilun, Jeon, Mansik, Kim, Jeehyun
Format: Article
Language:English
Subjects:
Cross-sections
full-field OCT
galvo filter
Industrial applications
large area scanning
Laser applications
Lasers
OCT
Optical Coherence Tomography
Synchronism
Thickness measurement
Thin films
Tomography
wavelength swept laser
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Summary: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.
ISSN:1424-8220
1424-8220
DOI:10.3390/s16111933