Abstract
The here presented work describes a surface profiling technique,for which the term closed-loop oprical coherence topography (CLOCT) was proposed [1]. This technique i s a scanning beam, servo-locked Variation of lowcoherence interferometry. It allowsfor the sub-wavelengthresolution tracking of a weakly scattering macroscopicscale surface with the absence ofsignificant real-time computational overhead and is thus particularly well suited to real-time surface profiling of in vivo, macroscopic biological surfaces.