Optical Engineering

Split-step birefringence simulation method for optical Kerr gates

Lei Liang, Zhenqiang Huang, Yipeng Zheng, Jiaxuan Tang, Kaili Ren, Dongdong Han, Nan Liu, Feng Zhao, Jinhai Si

Published Feb 3, 2023• 0 citations

Abstract

A split-step birefringence simulation method is proposed to investigate the gating efficiency and intensity distribution of the Kerr signal field considering the evolution of the switch beam and probe beam in their path. Using this simulation method, we investigated the switch-beam power-dependent gating efficiency and conducted an experiment to prove its reliability. Furthermore, we analyzed the optical intensity distribution of the Kerr signal exiting the Kerr medium under different switch-beam powers. This study provides an effective theoretical tool for the design and optimization of optical Kerr gates.

DOI: 10.1117/1.oe.62.2.024101

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Optical Engineering

Split-step birefringence simulation method for optical Kerr gates

Lei Liang, Zhenqiang Huang, Yipeng Zheng, Jiaxuan Tang, Kaili Ren, Dongdong Han, Nan Liu, Feng Zhao, Jinhai Si

Published Feb 3, 2023• 0 citations

Publisher

Abstract

DOI: 10.1117/1.oe.62.2.024101

Related papers

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A recent theory of polarization switching and beam amplification effect in Kerr-like media is extended to birefringent photorefractive crystals. In this class of material, the birefringence allows a new mechanism for coherent nonlinear mixing effects among the extraordinary and ordinary waves, leading to amplification and polarization switching effects. Analytic solutions of the parametric equations governing these interacting waves are solved for both the phase-matched and phase-mismatched geometries. The authors also present an experimental confirmation of the predicted polarization switching effect.>A recent theory of polarization switching and beam amplification effect in Kerr-like media is extended to birefringent photorefractive crystals. In this class of material, the birefringence allows a new mechanism for coherent nonlinear mixing effects among the extraordinary and ordinary waves, leading to amplification and polarization switching effects. Analytic solutions of the parametric equations governing these interacting waves are solved for both the phase-matched and phase-mismatched geometries. The authors also present an experimental confirmation of the predicted polarization switching effect.>

IEEE Journal of Quantum ElectronicsJan 1, 199212 citations

The self-Kerr-nonlinearity of a four-level

\mathsf{N}

-type atomic system is studied both experimentally and theoretically. The self-Kerr-nonlinear coefficient

{n}_{2}

of the probe beam is greatly enhanced near atomic resonance, and can be dramatically modified by changing the switching laser power. With an increasing switching laser power, the slope of the Kerr nonlinear coefficient

{n}_{2}

around the atomic resonance changes from negative to positive, and the value of

{n}_{2}

varies from \ensuremath{\sim}--4 \ifmmode\times\else\texttimes\fi{} 10${}^{\ensuremath{-}6}$ to 4 \ifmmode\times\else\texttimes\fi{} 10${}^{\ensuremath{-}6}$ cm

{}^{2}

/W at certain near-resonant probe frequency detunings. Such controllable Kerr nonlinearity can find applications in optoelectronic devices, such as all-optical switching and logic gates.