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Appl Opt. 2003 Jul 1;42(19):3896-902.

Interferometer for optical coherence tomography.

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  • 1Carl Zeiss, Carl-Zeiss-Strasse, 73446 Oberkochen, Germany. hauger@zeiss.de

Abstract

We describe a new interferometer setup for optical coherence tomography (OCT). The interferometer is based on a fiber arrangement similar to Young's two-pinhole interference experiment with spatial coherent and temporal incoherent light. Depth gating is achieved detection of the interference signal on a linear CCD array. Therefore no reference optical delay scanning is needed. The interference signal, the modulation of the signal, the axial resolution, and the depth range are derived theoretically and compared with experiments. The dynamic range of the setup is compared with OCT sensors in the time domain. To our knowledge, the first images of porcine brain and heart tissue and human skin are presented.

PMID:
12868828
[PubMed - indexed for MEDLINE]
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