Wide-field optical coherence tomography has a promising application for its high scanning rate and resolution. The principle of a wide-field optical coherence tomography system is described, and 2D images of glass slides are reconstructed using eight-stepped phase-shifting method in the system. Using VC6.0 and OpenGL programming, 3D images are reconstructed based on the Marching Cube algorithm with 2D image sequences. The experimental results show that the depth detection and three-dimensional tomography for translucent materials could be implemented efficiently in the WFOCT system.
A method of measuring a turbid medium's refractive index using optical coherence tomography (OCT) images is
presented. All of the necessary information for obtaining a sample's refractive index will be obtained through two OCT
images with and without the sample. The process of the measurement is simple and easy. The time of data gathering is
faster. Therefore, this method could provide a good way for measuring the refractive index of turbid media and materials
whose characters are easy to change. The refractive index of a sample, which has upper surface with arbitrary shape,
could be measured using the method. The data for measuring the sample's refractive index anywhere in 2-3 mm deeper
in the sample could be obtained at the same time. The method makes up the disadvantage of long time consuming and a
complex process in the focus tracking method. And it would make the optical path matching method developed further
more. The refractive indexes of some samples have been measured using this method and its validity has been proofed.