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10 October 2020 Polarization evolution of a vector optical field in a PT symmetry system
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Abstract
The evolution of a vector optical field (VOF) with a spiral phase and azimuthally-variant polarization distributions in the field cross-section in a Parity-Time (PT) symmetric system is demonstrated. The evolutions of the Stokes parameters of azimuthally-variant VOF in PT symmetry system are obtained by the split-step finite-difference method. Numerical results show that the coherent superposition of two orthogonal polarization components leads to the occurrence of the linear-circular polarization conversions in the periphery of the VOF during propagation in a PT symmetric system. Moreover, the optical intensity and the circular polarization components generated by transmission is not uniform during propagation in a PT symmetric system due to the gain and loss effect of PT symmetry. These results provide a new approach for the manipulation of a VOF with different modulation factors (refractive index, gain/loss, and lattice period) at different propagation distances in the PT symmetric system.
Conference Presentation
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Ju Wen, Gang Yao, Yan Wu, and Rui-Pin Chen "Polarization evolution of a vector optical field in a PT symmetry system", Proc. SPIE 11552, Optical Metrology and Inspection for Industrial Applications VII, 115520G (10 October 2020); https://doi.org/10.1117/12.2573858
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