Soliton resonant radiation in phase-matched second-harmonic generation
Year: 2024
Authors: Bu LL., Wu GZ., Hou C., Chen SH., Grelu P., Baronio F.
Autors Affiliation: Southeast Univ, Sch Phys, Nanjing 211189, Peoples R China; Southeast Univ, Frontiers Sci Ctr Mobile Informat Commun & Secur, Nanjing 211189, Peoples R China; Purple Mt Labs, Nanjing 211111, Peoples R China; Univ Bourgogne, Lab ICB, CNRS, UMR 6303, 9 Ave A Savary, F-21078 Dijon, France; Univ Brescia, INO CNR, Via Branze 38, I-25123 Brescia, Italy; Univ Brescia, Dipartimento Ingn Informaz, Via Branze 38, I-25123 Brescia, Italy.
Abstract: We investigate both analytically and numerically the optical resonant radiation of bright, dark, and Peregrine solitons in a phase-matched second-harmonic generation process, when they undergo a large temporal walk-off. By virtue of approximate analytical soliton solutions, we obtain simple yet universal formulas for their resonant radiation frequencies, all of which show a good agreement with numerical simulations. We unveil that the optical resonant radiation occurs solely when the second-harmonic component has a normal group-velocity dispersion, and the temporal walk-off tends to stabilize the soliton evolution, by reducing the resonant radiation even in the phase-matched regime. These findings have significantly generalized previous results and will shed more light on the mechanism behind the generation of dispersive waves in quadratic media.
Journal/Review: PHYSICAL REVIEW A
Volume: 109 (1) Pages from: 13510-1 to: 13510-9
KeyWords: Cherenkov Radiation; Modulational Instability; Optical Solitons; Dispersive Waves; Wavelength; Physics; Combs; ShiftDOI: 10.1103/PhysRevA.109.013510Citations: 2data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2024-10-20References taken from IsiWeb of Knowledge: (subscribers only)Connecting to view paper tab on IsiWeb: Click hereConnecting to view citations from IsiWeb: Click here