[OPTICAL REVIEW Vol. 2, No. 1 (1995) 28-31]

Quantitative Imaging by Optical Diffraction Tomography

Torolf C. WEDBERG and Jakob J. STAMNES

Department of Physics, University of Bergen, Allegt. 55, N-5007 Bergen, Norway

(Accepted November 7, 1994)

Optical diffraction tomography (ODT) is applied to reconstruct the cross-sectional, complex refractive index distribution of cylindrical objects. Experimental reconstructions showing noticeable image contrast for refractive index variations of about 0.001, and having a spatial resolution of about 2 μm, are obtained for objects with cross-sectional diameters of about 100 μm. The results demonstrate that ODT can be used for quantitative imaging of semitransparent fibers.

Key words : optical tomography, diffraction, refractive index, phase microscopy, quantitative imaging