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Kerr optical frequency comb generation using whispering-gallery-mode resonators in the pulsed-pump regime
- Source :
- Physical Review A, Physical Review A, 2021, 103, pp.023521 (7)
- Publication Year :
- 2021
- Publisher :
- HAL CCSD, 2021.
-
Abstract
- International audience; Kerr comb generation is usually based on the nonlinear dynamics of the intracavity field in a whispering-gallery-mode resonator pumped by a continuous-wave laser. However, using a pulsed instead of a continuous-wave pump opens an alternative research avenue from both the theoretical and experimental viewpoints, as it permits us to tailor the spectral properties of ultrashort pulse trains with a single passive nonlinear element. In this article we study the dynamics of Kerr optical frequency combs when the whispering-gallery-mode resonator is pumped by a synchronous pulse train. We propose a model that is based on an extension of the Lugiato-Lefever equation, which accounts for both the pulsed nature of the pump and the mismatch between the free-spectral range of the resonator and the repetition rate of the pulse train. We lay a particular emphasis on the effect of pump-cavity desynchronization on the spectral shape of the output combs. The numerical simulations are successfully compared with experimental measurements where the optical pulses are generated via time-lens soliton compression, and the resonator is a millimeter-size magnesium fluoride resonator with a billion quality factor at the pump wavelength.
- Subjects :
- Physics
[PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics]
business.industry
Physics::Optics
Soliton (optics)
Laser
01 natural sciences
010305 fluids & plasmas
law.invention
Resonator
Wavelength
Optics
law
0103 physical sciences
Pulse wave
Nonlinear element
Whispering-gallery wave
010306 general physics
business
Ultrashort pulse
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- Physical Review A, Physical Review A, 2021, 103, pp.023521 (7)
- Accession number :
- edsair.doi.dedup.....d04707ca14f4572d1443eb8c85dff3b9