Temporal solitons in optical microresonators

Temporal solitons in optical microresonators

27 Jun 2013 | T. Herr, V. Brasch, J.D. Jost, C.Y. Wang, N.M. Kondratiev, M. L. Gorodetsky, and T. J. Kippenberg
The paper reports the observation of temporal dissipative solitons in a high-Q optical microresonator. These solitons are spontaneously generated when the pump laser is tuned through the effective zero detuning point of a high-Q resonance, leading to an effective red-detuned pumping regime. This regime, typically unstable, acquires unique stability in the presence of solitons without active feedback. The number of solitons can be controlled via the pump laser detuning, and transitions between soliton states are associated with discontinuous steps in the resonator transmission. The findings enable the study of soliton physics, such as soliton crystals, and open the route to compact, high-repetition-rate femto-second sources with low noise and smooth spectral envelopes, crucial for applications in broadband spectroscopy, telecommunications, astronomy, and low phase-noise microwave generation. The soliton formation is explained through numerical simulations and analytical solutions of the Lugia-to-Lefever equation, showing that the system operates in a bistable regime with two branches corresponding to blue and red detuned operation. The experimental setup and methods, including numerical simulations and temporal characterization techniques, are detailed, providing a comprehensive understanding of the phenomenon.The paper reports the observation of temporal dissipative solitons in a high-Q optical microresonator. These solitons are spontaneously generated when the pump laser is tuned through the effective zero detuning point of a high-Q resonance, leading to an effective red-detuned pumping regime. This regime, typically unstable, acquires unique stability in the presence of solitons without active feedback. The number of solitons can be controlled via the pump laser detuning, and transitions between soliton states are associated with discontinuous steps in the resonator transmission. The findings enable the study of soliton physics, such as soliton crystals, and open the route to compact, high-repetition-rate femto-second sources with low noise and smooth spectral envelopes, crucial for applications in broadband spectroscopy, telecommunications, astronomy, and low phase-noise microwave generation. The soliton formation is explained through numerical simulations and analytical solutions of the Lugia-to-Lefever equation, showing that the system operates in a bistable regime with two branches corresponding to blue and red detuned operation. The experimental setup and methods, including numerical simulations and temporal characterization techniques, are detailed, providing a comprehensive understanding of the phenomenon.
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