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Updated: Jun 14, 2025

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Rapid Repetition Rate Fluctuation Measurement of Soliton Crystals in a Microresonator
Published on: December 15, 2021
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Temporal solitons in hybrid-driven active resonators.
D Kazakov1, F Capasso1, M Piccardo1,2,3
1Harvard John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, United States of America.
Summary
Active optical resonators enable sustained temporal solitons, offering versatile control for applications. Quantum cascade lasers show promise in semiconductor and hybrid photonic systems.
Area of Science:
- Optics and Photonics
- Semiconductor Lasers
- Integrated Photonics
Background:
- Solitons are self-reinforcing wave packets crucial in physics, particularly in optics.
- Temporal solitons in optics balance nonlinearity and dispersion for stable light pulses.
- Active optical resonators provide gain to sustain solitons, offering advantages over passive systems.
Purpose of the Study:
- To explore the advantages of active optical resonators for temporal soliton generation.
- To highlight quantum cascade lasers as a key technology in active soliton systems.
- To review diverse architectures and future directions for soliton-based semiconductor and hybrid photonic sources.
Main Methods:
- Investigating hybrid driving schemes, including coupled cavities and external optical injection.
- Examining various resonator architectures, such as Fabry-Perot and racetrack devices.
- Focusing on quantum cascade lasers within the active resonator framework.
Main Results:
- Active resonators offer enhanced control and versatility for soliton dynamics.
- Quantum cascade lasers demonstrate potential as advanced soliton sources.
- Diverse architectures enable tailored soliton generation for specific applications.
Conclusions:
- Active optical resonators represent a powerful platform for generating and controlling temporal solitons.
- Quantum cascade lasers and hybrid integration are key to advancing soliton-based photonic technologies.
- Future research directions focus on optimizing soliton properties and expanding applications in telecommunications and metrology.
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