Optical Coherence Tomography System for Subsurface Inspection
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United States of America Patent
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Issued Date -
Mar 27, 2025
app pub date -
Jul 24, 2024
filing date -
Jul 24, 2024
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Abstract
An OCT system includes a broadband light source and illumination optics that projects the generated broadband light to a sample where the light is scattered from within the sample in a direction that is normal to a surface of the sample to form a sample beam and is reflected from a top surface of the sample in a direction that is normal to the surface of the sample to form a reference beam where the sample beam and reference beam co-propagate. Collection optics collect light in the sample and reference beams and project the light to an interferometric combiner. The interferometric combiner is configured to interferometrically the collected light from the sample beam and collected light from the reference beam and to project the interferometrically combined light to a spectrometer that generates spectral interferometric information to determine information about the sample.
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