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Updated: Dec 27, 2025
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Generation and Coherent Control of Pulsed Quantum Frequency Combs
Published on: June 8, 2018
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Optical Frequency Combs in Quadratically Nonlinear Resonators
Iolanda Ricciardi1,2, Simona Mosca1, Maria Parisi1
1CNR-INO, Istituto Nazionale di Ottica, Via Campi Flegrei 34, I-80078 Pozzuoli (NA), Italy.
Micromachines
|February 28, 2020
Summary
Quadratic combs, a new class of optical frequency synthesizers, are generated in continuous-wave laser-pumped resonators. This research explores their formation, dynamics, and potential for novel applications.
Area of Science:
- Nonlinear optics
- Quantum optics
- Laser physics
Background:
- Optical frequency combs (OFCs) are crucial for precision measurement.
- Traditionally generated via mode-locked lasers or parametric processes in microresonators.
- Recent advancements enable OFC generation in continuous-wave laser-pumped resonators with second-order nonlinear media.
Purpose of the Study:
- Introduce quadratic combs and their underlying physics.
- Review experimental and theoretical work on quadratic comb formation and dynamics.
- Highlight the potential of quadratic combs for new applications.
Main Methods:
- Experimental demonstration in second harmonic generation (SHG) cavities.
- Experimental demonstration in degenerate optical parametric oscillators (OPOs).
- Theoretical analysis and modeling in both frequency and time domains.
Main Results:
- Demonstrated comb generation around the pump and second harmonic in SHG configuration.
- Demonstrated comb generation around the pump and subharmonic in degenerate OPO configuration.
- Provided theoretical insights into the dynamics of quadratic combs.
Conclusions:
- Quadratic combs represent a new class of efficient frequency comb synthesizers.
- They offer unique features for accessing new spectral regions.
- Potential for enabling novel applications in various scientific fields.
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