Simplified tomographic diffractive microscopy for axisymmetric samples

Ludovic Foucault (1) , Nicolas Verrier (1) , Matthieu Debailleul (1) , Bertrand Simon (2) , Olivier Haeberle (1)

1 IRIMAS - Institut de Recherche en Informatique Mathématiques Automatique Signal - IRIMAS - UR 7499
2 LP2N - Laboratoire Photonique, Numérique et Nanosciences

Tomographic diffractive microscopy exhibits intrinsic features making it a method of choice for 3D high-resolution label-free imaging. However, these results are achieved at the cost of a heavy data acquisition/reconstruction process. This drawback can be circumvented for certain classes of samples. For example, axisymmetric samples, like optical or textile fibers, present geometrical properties that can be advantageously used to speed-up the acquisition process. We propose to take benefit of these properties to allow for full reconstruction of axisymmetric samples’ complex refractive index distribution, using four approaches, adapted to 3D samples. We applied the proposed reconstruction scheme, based on a numerical rotation of data, to both simulated and experimental data sets.

Domaines: Traitement du signal et de l'image [eess.SP]

Ludovic Foucault, Nicolas Verrier, Matthieu Debailleul, Bertrand Simon, Olivier Haeberle. Simplified tomographic diffractive microscopy for axisymmetric samples. OSA Continuum, 2019, 2 (4), pp.1039-1055. ⟨10.1364/OSAC.2.001039⟩. ⟨hal-03615860⟩