22 November 2011 Polarization and spectral action of narrow slit
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Proceedings Volume 8338, Tenth International Conference on Correlation Optics; 83380C (2011) https://doi.org/10.1117/12.920558
Event: Correlation Optics 2011, 2011, Chernivsti, Ukraine
Experimental study of diffraction of coherent (laser, completely polarized) and incoherent (temporal, polychromatic, unpolarized) light radiation at slits whose width is restricted by a few wavelengths is made. It is shown that for diffraction at the edge of metallic half-plane screen, the angular dependences of diffraction field intensity are considerably different for orientation of the electric field vector parallel and perpendicular to the screen edge, so that metallic screen causes polarization action on the probing beam. It is shown that as the width of a slit formed by two metallic half-planes becomes less than ten wavelengths (being left larger than a wavelength), as the polarization effect is considerable even for the forward direction, i.e. for the zero diffraction angle. It causes also spectral effect, if polychromatic radiation diffracts at narrow slit at metallic screen. Namely, one observes pronounced blue shift of the maximum of the spectral distribution of the forward diffracted polychromatic ('white-light') beam. We apply for the first time the Berry's chromascopic technique for experimental data processing to elucidate such diffraction induced spectral changes.
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M. V. Oleksyuk, M. V. Oleksyuk, Ch. V. Felde, Ch. V. Felde, P. V. Polyanskii, P. V. Polyanskii, } "Polarization and spectral action of narrow slit", Proc. SPIE 8338, Tenth International Conference on Correlation Optics, 83380C (22 November 2011); doi: 10.1117/12.920558; https://doi.org/10.1117/12.920558


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