Linear OCT system with increased measurement depth for biomedical applications

Gereon Hüttmann; Volker Hellemanns; Peter Koch

doi:10.1117/12.700853

10 February 2007 Linear OCT system with increased measurement depth for biomedical applications

Gereon Hüttmann, Volker Hellemanns, Peter Koch

Proceedings Volume 6429, Coherence Domain Optical Methods and Optical Coherence Tomography in Biomedicine XI; 642915 (2007) https://doi.org/10.1117/12.700853
Event: SPIE BiOS, 2007, San Jose, California, United States

Abstract

Time domain optical coherence tomography (OCT) traditionally uses scanning optical delay lines with moving parts and a point detectors. OCT systems build with a linear detector array (linear OCT or L-OCT) are simple and robust, but a detector with approx. 10,000 elements is needed for an imaging depth of 2 millimeter, which is necessary for most biomedical applications. We present a new optical setup for L-OCT with increased measurement range. An additional grating performs a reduction of the spatial frequencies of the fringe pattern on the detector without loss of SNR, so the signal can be sampled with a minimal number of pixels. The theory for this approach is addressed and first measurements are presented.

Citation Download Citation

Gereon Hüttmann, Volker Hellemanns, and Peter Koch "Linear OCT system with increased measurement depth for biomedical applications", Proc. SPIE 6429, Coherence Domain Optical Methods and Optical Coherence Tomography in Biomedicine XI, 642915 (10 February 2007); https://doi.org/10.1117/12.700853

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