Two-color flat-top solitonic pulses in $\chi^{(2)}$ optical microresonators via second harmonic generation

10 Jan 2020 Lobanov Valery E. Kondratiev Nikita M. Shitikov Artem E. Bilenko Igor A.

We studied numerically the generation of the coherent frequency combs at second harmonic generation in $\chi^{(2)}$ microresonators via conventional frequency scan method. It was demonstrated for the first time that under particular conditions it is possible to generate two-color flat-top solitonic pulses, platicons, using pump amplitude modulation or controllable mode interaction approach, if the signs of the group velocity coefficients at pump frequency and its second harmonic are opposite but absolute values of these coefficients are rather close... (read more)

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