Patent ID: 8488125

Claim:
An optical tomography apparatus which divides a light from a light source, guides one of the divided light to a sample object while guiding the other one of the divided light to a reference mirror, and by using an interfering light between a backscattering light of the sample object and a reflected light of the reference mirror, images a tomogram of the sample object, the optical tomography apparatus comprising: a supercontinuum light source comprising the light source; an optical system having group velocity dispersion connected to an output of the supercontinuum light source; an optical detector detecting the interfering light; a timing detection element detecting a timing of each wavelength component in an output light from the optical system having the group velocity dispersion; and a unit sampling a signal from the optical detector by using a timing signal from the timing detection element with a signal from the supercontinuum light source as a trigger, and detecting an optical tomogram signal based on the sampled signal, wherein the timing detection element comprises an optical resonator of which a resonator length is configured to be variable, and an optical detector provided at a post-stage of the optical resonator.