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

Anton Grebenyuk (1) , Antoine Federici (2) , Vladimir Ryabukho (1) , Arnaud Dubois (2)

1 Saratov State Technical University
2 Laboratoire Charles Fabry / Biophotonique

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.

Domaines: Optique [physics.optics]

Anton Grebenyuk, Antoine Federici, Vladimir Ryabukho, Arnaud Dubois. Numerically focused full-field swept-source optical coherence microscopy with low spatial coherence illumination. Applied optics, 2014, 53 (8), pp.1697-1708. ⟨10.1364/AO.53.001697⟩. ⟨hal-00956673⟩