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Surface profile measurement for a large depth object using optical frequency comb and compressive sensing

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Abstract

We demonstrate a profilometer using an ultra-stabilized mode-locked frequency comb laser and the compressive sensing. The ultra-stabilized laser is used to measure an object with a large depth, wide dynamic range without any 2π phase ambiguity. The compressive sensing can obtain the object profile using two photo-receivers and the number of measurements which is fewer than the number of sampling points.

© 2013 Optical Society of America

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