6 March 2012
4 - 5pm
Venue: Ground Floor Seminar Room (G010), UniServices House, 70 Symonds Street, Auckland
A Bioengineering research seminar by Dr Frederique Vanholsbeek, Department of Physics
Optical coherence tomography (OCT) is a non-invasive imaging technique based on low coherence interferometry that provides high resolution 3D images of small samples with a depth range of 1 mm. Typically the depth resolution is inversely proportional to the light source bandwidth and can be as good as 1 µm in recent experiments. Dispersion imbalance between the two arms of the interferometer degrades this resolution of the OCT setup. We have been working on different techniques, both hardware and software, to compensate for this dispersion imbalance and to restore the system resolution to the theoretical prediction. In some cases, the numerical techniques present the advantage of being able to measure the sample dispersion. During the talk, we will present the basics of OCT and discuss the different techniques we have implemented to compensate for dispersion imbalance.