Testing scalar diffraction theory: Gaussian beam on a slit (CROSBI ID 279590)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Zurak, Luka ; Labinac, Velimir ; Erceg, Nataša ; Aviani, Ivica ; Jusup, Marko ; Karuza, Marin
engleski
Testing scalar diffraction theory: Gaussian beam on a slit
We recorded diffraction patterns using a commercially available slit and sensor over a wide range of experimental circumstances, including near- and far-field regimes and oblique incidence at large angles.We then compared the measured patterns with theoretical intensity curves calculated via the numerical integration of formulas derived within the framework of scalar diffraction theory. Experiment and theory show particularly good agreement when the firstRayleigh–Sommerfeld (R-S) formula is used. TheKirchhoff formula, though problematic in the context of mathematical consistency, agrees with the first R-S formula, even for large incidence angles, whereas the second R-S formula differs visibly.To obtain such a good agreement, we replaced the assumption of an incident plane wave with that of a Gaussian beam and implemented geometric corrections to account for slit imperfections. These results reveal how the scope of scalar diffraction theory can be extended with a small set of auxiliary assumptions.
Scalar diffraction theory ; Gaussian beam ; Oblique incidence ; Single slit diffraction ;
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Podaci o izdanju
37 (5)
2020.
752-758
objavljeno
1084-7529
1520-8532
10.1364/JOSAA.388703