Optical coherence tomography

Enhancement of the resolution of full-field optical coherence tomography by using a colour image sensor

A. L. Kalyanov^a, V. V. Lychagov^a, I. V. Smirnov^a, V. P. Ryabukho<sup>ab

a</sup> Saratov State University
^b Institute of Precision Mechanics and Control, Russian Academy of Sciences, Saratov

Abstract: The influence of white balance in a colour image detector on the resolution of a full-field optical coherence tomograph (FFOCT) is studied. The change in the interference pulse width depending on the white balance tuning is estimated in the cases of a thermal radiation source (incandescent lamp) and a white light emitting diode. It is shown that by tuning white balance of the detector in a certain range, the FFOCT resolution can be increased by 20 % as compared to the resolution, attained with the use of a monochrome detector.

Keywords: full-field interferometry, interferometry in white light, white balance, fill-field optical coherence tomography.

PACS: 42.25.Kb, 42.30.Wb, 87.63.L-, 42.79.Pw

Received: 14.09.2012
Revised: 12.04.2013

 English version: Quantum Electronics, 2013, 43:8, 762–767

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