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Six-wave interaction in multimode waveguides with Kerr nonlinearity with allowance for the Gaussian structure of pump waves
V.V. Ivakhnik 1, D.R. Kapizov 1, V.I. Nikonov 1

1 Samara National Research University,
443086, Russia, Samara, Moskovskoye shosse 34

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DOI: 10.18287/2412-6179-CO-1439

Pages: 483-490.

Abstract:
The quality of wavefront conjugation in the case of six-wave interaction in two-dimensional multimode waveguides with Kerr nonlinearity is analyzed under the condition that one of the pump waves excites a zero waveguide mode and the amplitude distribution of the other pump wave at the waveguide end facet varies according to the Gauss law. It is shown that in a waveguide with infinitely conducting walls, the half-width of the modulus of the point spread function of a six-wave radiation converter is completely determined by the transverse size of the waveguide and weakly depends on the width of the Gaussian pump wave. In a parabolic-index profile waveguide, a decrease in the width of the Gaussian pump wave at the waveguide ends commonly leads to a monotonic decrease in the half-width of the point spread function modulus.

Keywords:
six-wave radiation converter, wavefront conjugation, Kerr nonlinearity.

Citation:
Ivakhnik VV, Kapizov DR, Nikonov VI. Six-wave interaction in multimode waveguides with Kerr nonlinearity with allowance for the Gaussian structure of pump waves. Computer Optics 2024; 48(4): 483-490. DOI: 10.18287/2412-6179-CO-1439.

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