Light source unit for optical coherence tomography and optical coherence tomography apparatus

摘要

PROBLEM TO BE SOLVED: To provide a light source unit for optical interference tomography that has relatively simple device constitution although frequency sweeping is made faster, and an optical interference tomographic device.SOLUTION: A light source unit 10 for optical interference tomography comprises: a wide-band pulse light source 100 which outputs wide-band light in the form of pulses; an upstream-side spectroscope 102 which inputs the wide-band light from an upstream-side input port 102a, and outputs a plurality of first spectral components generated by spectrally dispersing the wide-band light from a plurality of upstream-side output ports 102b respectively; a plurality of upstream-side optical waveguides 103 provided to different lengths; a downstream-side spectroscope 104 which inputs the plurality of the first spectral components from the plurality of downstream-side input ports 104a respectively through the upstream-side optical waveguides 103, and outputs a plurality of second spectral components, obtained by further spectrally dispersing the first spectral components respectively from a plurality of downstream-side output ports 104b respectively; and a plurality of downstream-side optical waveguides 105 provided to different lengths.SELECTED DRAWING: Figure 2