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The authors study the formation of three-dimensional spatiotemporal solitons in waveguides with a parabolic refractive index profile and pure quartic chromatic dispersion using variational and numerical methods. They find that pure quartic spatiotemporal solitons remain stable within a significantly larger energy range with respect to their second-order dispersion counterparts.
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Parra‐Rivas et al. (2024) studied this question.
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