Singularities in the interference field of the three beam interferometer

Piotr Kurzynowski; Marzena Zdunek

doi:10.1117/12.2050243

17 December 2013 Singularities in the interference field of the three beam interferometer

Piotr Kurzynowski, Marzena Zdunek

Proceedings Volume 9066, Eleventh International Conference on Correlation Optics; 90660L (2013) https://doi.org/10.1117/12.2050243
Event: Eleventh International Conference on Correlation Optics, 2013, Chernivsti, Ukraine

Abstract

Different types of singularities in the interference field of three plane waves with different polarization states are presented. As a result various types of singularities were found: isolated zero intensity points and polarization singularities of different types (depending on a chosen set of polarization parameters). The isolated zero intensity points form a specific rectangular lattice which turns into a hexagonal one when using the analyzer; an additional isolated zero intensity points appear as a result of interaction of the polarization singularities with the analyzer. The vortices observed in the phase pattern have topological signs equal to ± 1. More interesting are the polarization singularities present in the interference field without the analyzer. We observed the polarization singularities with different topological charges, −2 and + 1, for azimuth angle distribution and 0 for the diagonal angle distribution in the interference field of the three linearly polarized waves (LLL). In the case of the two linearly polarized waves interference and a third one circularly polarized (LLC) the polarization singularities with charge 0 were observed in the azimuth, ellipticity and diagonal angles distributions. We also noticed other characteristic points: saddles (for the ellipticity angle distribution in the LLL interference) and cross edge dislocations (for the phase angle distributions in both cases). Moreover, the zero intensity points in the setup without the analyzer appeared to be double singularities where both polarization parameters are undetermined simultaneously.

Citation Download Citation

Piotr Kurzynowski and Marzena Zdunek "Singularities in the interference field of the three beam interferometer", Proc. SPIE 9066, Eleventh International Conference on Correlation Optics, 90660L (17 December 2013); https://doi.org/10.1117/12.2050243

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