Soliton regulation in microcavities induced by fundamental-second-harmonic mode coupling

Abstract

Microcomb generation with simultaneous ${\chi }^{(2)}$ and ${\chi }^{(3)}$ nonlinearities brings new possibilities for ultra-broadband and potentially self-referenced integrated comb sources. However, the evolution of the intracavity field involving multiple nonlinear processes shows complex dynamics that is still poorly understood. Here we report on strong soliton regulation induced by fundamental-second-harmonic (FD-SH) mode coupling. The formation of solitons from chaos is extensively investigated based on coupled Lugiato-Lefever equations. The soliton generation shows more deterministic behaviors in the presence of FD-SH mode interaction, in sharp contrast to the usual cases where the soliton number and relative locations are stochastic. Deterministic single soliton transition, soliton binding and prohibition are observed, depending on the phase matching condition and coupling coefficient between the fundamental and second-harmonic waves. Our finding provides important new insights into the soliton dynamics in microcavities with simultaneous ${\chi }^{(2)}$ and ${\chi }^{(3)}$ nonlinearities, and can be immediate guidance for broadband soliton comb generation with such platforms.

arXiv comment6 pages, 6 figures

References in corpus (15)

• Temporal solitons in optical microresonators
• Microresonator solitons for massively parallel coherent optical communications
• Microresonator Soliton Dual-Comb Spectroscopy
• Ultrafast optical ranging using microresonator soliton frequency combs
• Mode interaction aided excitation of dark solitons in microresonators constructed of normal dispersion waveguides
• Soliton Microcomb Range Measurement
• Hilbert Transform based Quadrature Hybrid RF Photonic Coupler via a Micro-Resonator Optical Frequency Comb Source
• Mode spectrum and temporal soliton formation in optical microresonators
• Raman induced soliton self-frequency shift in microresonator Kerr frequency combs
• Microcomb-based true-time-delay network for microwave beamforming with arbitrary beam pattern control
• Non-reciprocal nonlinear optic induced transparency and frequency conversion on a chip
• Single-mode dispersive waves and soliton microcomb dynamics
• Second-harmonic assisted four-wave mixing in chip-based microresonator frequency comb generation
• Long-haul coherent communications using microresonator-based frequency combs
• Single envelope equation modelling of multi-octave comb arrays in microresonators with quadratic and cubic nonlinearity