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En-face OCT
Researchers at the AOG were the first to show that there is no need for an external phase modulator if the object to be imaged is scattering and the image size is sufficiently large. The modulation is, interestingly, created by scanning the beam over the target.
First, we showed that a Newton ring pattern is sampled from the target:
A. Gh.Podoleanu, G. M. Dobre, D. J. Webb, D. A. Jackson, Imaging by Use of a Newton Rings Sampling Function" Coherence, Republished in "Selected Papers on Optical Low-Coherence Reflectometry & Tomography, B. R. Masters and B. J. Thompson eds., SPIE Milestone Series, vol. MS165, SPIE Optical Engineering Press, Washington, 2000, USA, pp. 200-202. Opt. Lett., Vol. 21, pp. 1789-1791, (1996).
Then we moved the centre of the Newton rings out from the image centre and sampled the target with a grid of lines:
A. Gh.Podoleanu, G. M. Dobre, D. A. Jackson, En-face Coherence Imaging Using Galvanometer Scanner ModulationOpt. Letters, (1998), vol. 23, pp.
147-149.
This report demonstrates for the first time, B-scan OCT images from the retina constructed from T-scans (en-face 1D OCT scans):
A. Gh.Podoleanu, M. Seeger, G. M. Dobre, D. J. Webb, D. A. Jackson, F. Fitzke, Transversal and Longitudinal Images from the Retina of the Living Eye Using Low Coherence Reflectometry, Republished in "Selected Papers on Optical Low-Coherence Reflectometry & Tomography", B. R. Masters and B. J. Thompson eds., SPIE Milestone Series, vol. MS165, SPIE Optical Engineering Press, Washington, 2000, USA, pp. 461-469. Journal of Biomedical Optics, 3, (1), (1998), pp. 12-20.