Abstract
Frequency conversion of dissipative solitons associated with the generation of broadband optical frequency combs having a tooth spacing of hundreds of giga-hertz is a topical challenge holding the key to practical applications in precision spectroscopy and data processing. The work in this direction is underpinned by fundamental problems in nonlinear and quantum optics. Here, we present the dissipative two-colour bright-bright and dark-dark solitons in a quasi-phase-matched microresonator pumped for the second-harmonic generation in the near-infrared spectral range. We also found the breather states associated with the pulse front motion and collisions. The soliton regime is found to be typical in slightly phase-mismatched resonators, while the phase-matched ones reveal broader but incoherent spectra and higher-order harmonic generation. Soliton and breather effects reported here exist for the negative tilt of the resonance line, which is possible only via the dominant contribution of second-order nonlinearity.
| Original language | English |
|---|---|
| Article number | 2798 |
| Number of pages | 8 |
| Journal | Nature Communications |
| Volume | 14 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 16 May 2023 |
Bibliographical note
Funding Information:This work was supported in part by the NSF Center for Quantum Networks under grant number EEC-1941583, EU Horizon-2020 MSCA program (812818), and the Royal Society (SIF/R2/222029). We acknowledge partial funding support for materials used in this project by the Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering under Grant DE-SC0019406. The authors thank M. Rooks and Y. Sun for assistance in device fabrication.
Data availability
The data supporting the findings of this study are available from corresponding authors on reasonable request