Temporal quadratic solitons and their interaction with dispersive waves in Lithium Niobate nano-waveguides

Abstract

We present a model of soliton propagation in waveguides with quadratic nonlinearity. Criteria for solitons to exist in such waveguides are developed and two example nano-waveguide structures are simulated as proof of concept. Interactions between quadratic solitons and dispersive waves are analysed giving predictions closely matching soliton propagation simulations. The example structures are found to support five different regimes of soliton and quasi-soliton existence. Pulse propagation in these example waveguides has been simulated confirming the possibility of soliton generation at experimentally accessible powers. Simulations of multi-soliton generation, Cherenkov radiation and quasi-solitons with opposite signs of dispersion in the fundamental and second harmonic are also presented here.

arXiv comment10 pages, 4 figures

References in corpus (5)

• Looking at a soliton through the prism of optical supercontinuum
• Coherent two-octave-spanning supercontinuum generation in lithium-niobate waveguides
• Experimental observation of long-wavelength dispersive wave generation induced by self-defocusing nonlinearity in BBO crystal
• Parametrically tunable soliton-induced resonant radiation by three-wave mixing
• High-energy, shock-front assisted resonant radiation in the normal dispersion regime

Cited by in corpus (5)

• Nonlinear states and dynamics in a synthetic frequency dimension
• Raman solitons in waveguides with simultaneous quadratic and Kerr nonlinearities
• Solitons near avoided mode crossing in ${\chi }^{(2)}$ nanowaveguides
• Peregrine solitons and resonant radiation in cubic and quadratic media
• Topological gap solitons in equidistant lithium niobate waveguide arrays