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Two-color flat-top solitonic pulses in $\upchi$(2) optical microresonators via second-harmonic generationстатья
- Авторы: Lobanov Valery E., Kondratiev Nikita M., Shitikov Artem E., Bilenko Igor A.
- Журнал: Physical Review A - Atomic, Molecular, and Optical Physics
- Том: 101
- Номер: 1
- Год издания: 2020
- Издательство: American Physical Society
- Местоположение издательства: United States
- DOI: 10.1103/physreva.101.013831
- Аннотация: We studied numerically the generation of the coherent frequency combs at second-harmonic generation in χ(2) microresonators via the conventional frequency scan method. It was demonstrated that under particular conditions it is possible to generate two-color flat-top solitonic pulses, platicons, using a pump amplitude modulation or a controllable mode interaction approach, if the signs of the group velocity dispersion coefficients at pump frequency and its second harmonic are opposite but absolute values of these coefficients are rather close. It was revealed that platicons may be observed on both sides of the linear microresonator resonance (at positive, as well as negative pump frequency detunings). For the efficient platicon excitation, one needs simultaneous accurate matching of both the microresonator free spectral ranges and resonant eigenfrequencies. Platicon generation processes were simulated numerically, excitation conditions and platicon generation domains were found for different generation methods, and the properties of generated platicons were studied for the different combinations of the medium parameters.
- Добавил в систему: Шитиков Артем Евгеньевич