info:eu-repo/semantics/article
Talbot effect with a grating of period 1 μm
Fecha
2019-04Registro en:
Arrieta, Emiro S.; Bolognini, Nestor Alberto; Torres Moreno, Cesar Orlando; Talbot effect with a grating of period 1 μm; Elsevier Gmbh; Optik; 183; 4-2019; 988-993
0030-4026
CONICET Digital
CONICET
Autor
Arrieta, Emiro S.
Bolognini, Nestor Alberto
Torres Moreno, Cesar Orlando
Resumen
Under coherent plane wave illumination, the classical Talbot effect yields exact replica of the periodic input pattern in planes periodically distributed in the free propagation direction (paraxial regime). But when the period of the object is comparable with the wavelength, the Talbot phenomenon is considered to enter its non-paraxial regime(non-paraxial Talbot effect). In this contribution an experimental and theoretical report of this phenomenon is presented at non-paraxial regime with a amplitude grating of period 1μm, using a plane wave with wavelength of 616nm. The experimental self-images are registered by a confocal microscope and these self-images are contrasted with those obtained by the theory of diffraction in representation of plane waves. Contrary to what was expected, the remarkable results obtained is that it does not present quasi-self-images phenomenon and a detailed discussion of this behavior is included.