Time domain ptychographic full field optical coherence tomography

Abstract

Abstract Full field optical coherence tomography (FF-OCT) has the advantage of ultrahigh lateral resolution (∼1 µm) resulting from a relatively high numerical aperture (NA) micro objective. However, usually the field of view of micro objective is limited. Furthermore, in vivo imaging, significant motion artifacts limit the performance of traditional FF-OCT where the quality of the restored image is generally degraded due to the influence of motion artifacts. In this paper, we propose a method of edge-preserving ptychography based on dual-balanced time domain FF-OCT, which we can call it time-domain ptychography full field optical coherence tomography (TD-POCT). The method combines the advantages of both ptychography and dual-balanced FF-OCT, which can overcome the limitation of the field for view of micro objective and suppresses motion blur. Moreover, this method can recover not only the amplitude of each layer, but also the phase information. So in addition to tomography, the system can also be used for surface 3D object reconstruction. Numerical simulation verifies that both the horizontal and vertical resolution can reach a few microns.