Article

Optimal spectral reshaping for resolution improvement in optical coherence tomography

Department of Biomedical Engineering, Northwestern University, Evanston, Illinois, United States
Optics Express (Impact Factor: 3.49). 07/2006; 14(13):5909-15. DOI: 10.1364/OE.14.005909
Source: PubMed

ABSTRACT We analyze the resolution limit that can be achieved by means of spectral reshaping in optical coherence tomography images and demonstrate that the resolution can be improved by means of modelessly reshaping the source spectrum in postprocessing. We show that the optimal spectrum has a priory surprising "crater- like" shape, providing 0.74 micron axial resolution in free-space. This represents similar to 50% improvement compared to resolution using the original spectrum of a white light lamp. (c) 2006 Optical Society of America.

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