Infrared Optical Path Adjustment Method for Common-path Optical Coherence Tomography

Abstract

A new, common-path, in-axis concentric beam-splitting Michelson interferometer is demonstrated for optical coherence tomography (OCT), which can be used to perform high resolution cross-sectional in vivo and in situ imaging of biological tissues. a piece of glass tube with its inner diameter smaller than the beamwidth of the collimated light is used to split the light into a reference and sample beam. in order to obtain the optimal spectral interferogram of this OCT system, an infrared optical path adjustment method was introduced in this paper. © (2012) Trans Tech Publications, Switzerland