Diverse interlocked switching waves in cavity-enhanced second-harmonic generation

被引:0
|
作者
Wu, Gangzhou [1 ,2 ]
Hou, Chong [1 ,2 ]
Wei, Mating [1 ,2 ]
Chen, Shihua [1 ,2 ,3 ]
Lin, Tong [4 ,5 ]
Baronio, Fabio [6 ,7 ]
Ni, Zhenhua [1 ,2 ,3 ]
机构
[1] Southeast Univ, Sch Phys, Nanjing 211189, Peoples R China
[2] Southeast Univ, Frontiers Sci Ctr Mobile Informat Commun & Secur, Nanjing 211189, Peoples R China
[3] Purple Mt Labs, Nanjing 211111, Peoples R China
[4] Southeast Univ, Adv Photon Ctr, Sch Elect Sci & Engn, Nanjing 210096, Peoples R China
[5] Zhejiang Univ, State Key Lab Silicon & Adv Semicond Mat, Hangzhou 310027, Peoples R China
[6] Univ Brescia, Dept Informat Engn, Via Branze 38, I-25123 Brescia, Italy
[7] CNR, INO, Via Branze 38, I-25123 Brescia, Italy
来源
OPTICS EXPRESS | 2024年 / 32卷 / 26期
基金
中国国家自然科学基金;
关键词
FREQUENCY COMB GENERATION; PULSE KERR COMBS; SOLITARY WAVES; MODULATIONAL INSTABILITY; PATTERN-FORMATION; DOMAIN-WALLS; SOLITONS; DISPERSION; NONLINEARITIES; RADIATION;
D O I
10.1364/OE.542276
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We investigate the intriguing dynamics and existence conditions of temporal two-color flat-top solitons, termed interlocked switching waves (ISWs), in driven quadratic microresonators via a phase-matched second-harmonic generation process. We show that the formation of two-color ISWs relies strongly upon the pump frequency detuning, the group-velocity dispersion, and the temporal walk-off, and that the ISWs at the negative detuning may behave differently from the ones formed at the positive detuning, due to the asymmetric modulation instability of homogeneous steady-state solutions. In contrast to previous predictions, stable ISW states are found to occur as well on interacting harmonics that both have anomalous group-velocity dispersions when prepared at the negative detuning. Moreover, we unveil that large temporal walk-off contributes to the formation of two-color ISWs at the positive detuning but tends to deteriorate at the negative detuning. Our results help improve our understanding of two-color ISWs and thereby pave the way for highly efficient octave-spanning dual-band comb generation.
引用
收藏
页码:45436 / 45452
页数:17
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