Numerically focused full-field swept-source optical coherence microscopy with low spatial coherence illumination

Abstract : We propose a 3D imaging technique based on the combination of full-field swept-source optical coherence microscopy (FF-SSOCM) with low spatial coherence illumination and a special numerical processing that allows for numerically focused coherent-noise-free imaging without mechanical scanning in longitudinal or transversal directions. We show, both theoretically and experimentally, that the blurring effects arising in FF-SSOCM due to defocus can be corrected by appropriate numerical processing even when low spatial coherence illumination is used. A FF-SSOCM system was built for testing the performance of this technique. Coherent-noise-free imaging of a sample with longitudinal extent exceeding the optical depth of field is demonstrated without displacement of the sample or any optical element.
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Anton Grebenyuk, Antoine Federici, Vladimir Ryabukho, Arnaud Dubois. Numerically focused full-field swept-source optical coherence microscopy with low spatial coherence illumination. Applied optics, Optical Society of America, 2014, 53 (8), pp.1697-1708. ⟨10.1364/AO.53.001697⟩. ⟨hal-00956673⟩

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