Diffraction diagnostics of phase singularities at optical beams

Christina V. Felde

doi:10.1117/12.558799

4 June 2004 Diffraction diagnostics of phase singularities at optical beams

Christina V. Felde

Proceedings Volume 5477, Sixth International Conference on Correlation Optics; (2004) https://doi.org/10.1117/12.558799
Event: Sixth International Conference on Correlation Optics, 2003, Chernivsti, Ukraine

Abstract

A diffraction technique for diagnostics of phase singularities occurring at optical beams is presented. It is shown that both the phase twirling (clockwise or counterclockwise) of a vortex optical beam and the modulus of an azimuthal mode index of the beam are directly and unambiguously determined on the bending of interference fringes in a strip Young's interference experiment. Applicability of the proposed technique into diagnostics of phase singularities kind of non-localized dark interference fringes and into revealing of optical vortices at developed speckle fields at far zone is demonstrated. Advantages of the diffraction diagnostics of phase singularities at optical fields against the classical interference testing are argued.

Citation Download Citation

Christina V. Felde "Diffraction diagnostics of phase singularities at optical beams", Proc. SPIE 5477, Sixth International Conference on Correlation Optics, (4 June 2004); https://doi.org/10.1117/12.558799

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