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1

Interference coloring of regularly scattered white light

Angelsky O.V., Bogatyryova H.V., Polyanskii P.V

Optica Applicata

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2008

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Vol. 38, nr 2

431-444

EN

Interference coloring of the regular component of a polychromatic light scattered by a colorlessdielectric slab with a rough surface is considered. To explain the observed alternation of colors as the depth of roughness grows, we apply the model of a transient layer associated with surfach roughness, which extends the well-known analogy between the layer and a light-scattering particle. It is shown that coloring of the forward-scattered component of a white light can be interpreted as the action of a peculiar quarter-wavelength (anti-reflecting) layer for some spectra component of a polychromatic probing beam. By applying the modern chromascopic technique, we compare the coloring of the forward-scattered and the specularly reflected radiation. As the demonstration, the effect of "a blue Moon" and "a red Moon" caused by the spectral changes induced by white-light scattering at the rough surface of a colorless glass is represented. - Natura simplex et fecunda, A. Fresnel.

2

Creation and diagnostics of stable rainbow optical vortices

Arkhelyuk O. O., Polyanskii P. V., Ivanovskii A. A., Soskin M. S.

Optica Applicata

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2004

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Vol. 34, nr 3

419-426

EN

An on-axis computer-synthesized hologram-based technique is introduced to create white-light “rainbow” optical vortices, which are stable with respect to environmental disturbances under long-distance propagation of singularity supporting beams. Regularities governing the radial alternation of colors at highly directed rainbow vortices are discussed. The original diffraction technique for detecting phase singularities is applied to reveal and diagnose the polychromatic vortices

3

Referenceless testing of vortex optical beams

Bogatiryova H. V., Felde C. V., Polyanskii P. V.

Optica Applicata

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2003

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Vol. 33, nr 4

695-708

EN

A new simple technique for determining the phase handedness (clockwise or counterclockwise) of vortex optical beams, which does not require implementation of an interferometric arrangement, is introduced. It is shown that both the phase handedness and the modulus of an azimuthal mode index of the beam can be directly and unambiguously determined on the basis of bending of interference fringes in a “strip” Young’s interference experiment. The initial results are obtained by simulation, partially demonstrated and discussed. Applicability of the proposed technique to testing elementary and complex vortex-bearing optical beams and fields is discussed

4

Scattering-induced spectral changes as a singular optical effect

Polyanskii V.K., Angelsky O.V., Polyanskii P.V.

Optica Applicata

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2002

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Vol. 32, nr 4

843-848

EN

Scattering-induced spectral changes observed in the forward-scattered component of polychro- matic radiation transmitted trough a colourless transparent plate with a surface roughness comparable with the wave length of some spectral component of the probing beam are represented as peculiar effect of singular optics. Spectral modifier governing this process and providing blue -shift or red-shift of spectrum is specified. Scattering-induced spectral changes are both shown numerically and demonstrated.