Frequency combs articles within Nature Photonics

Featured

  • Article |

    Kerr resonators can support a new form of parametrically driven temporal cavity soliton (and associated optical frequency comb), with potential performance advantages that include background-free operation and the possibility of very high pump-to-comb conversion efficiencies.

    • Grégory Moille
    • , Miriam Leonhardt
    •  & Miro Erkintalo

  • Article
    | Open Access

    Photonic crystal microring resonators with a periodic corrugation inscribed along the resonator’s circumference allow programmable synthetic reflection for self-injection-locked microcombs and their operation exclusively in the single-soliton regime.

    • Alexander E. Ulanov
    • , Thibault Wildi
    •  & Tobias Herr

  • Article
    | Open Access

    Researchers demonstrated coherent dissipative Kerr solitons with a conversion efficiency exceeding 50% and good line spacing stability. The results may facilitate practical implementation of a scalable integrated photonic architecture for energy-efficient applications.

    • Óskar B. Helgason
    • , Marcello Girardi
    •  & Victor Torres-Company

  • Article
    | Open Access

    Bright solitons are produced through the interaction of pulse pairs generated via a continuous-wave fibre laser, which pumps two coupled microresonators featuring normal dispersion. Multicolour pulse pairs over multiple rings can also be generated, of great promise for applications such as all-optical soliton buffers and memories, study of quantum combs and topological photonics.

    • Zhiquan Yuan
    • , Maodong Gao
    •  & Kerry Vahala

  • Article |

    This work reports an inverse design approach that can spectrally shape Kerr microcombs by imprinting a nanophotonic dispersion filter to a microresonator to engineer solitonic frequency-comb states in the resonator with an optimization algorithm.

    • Erwan Lucas
    • , Su-Peng Yu
    •  & Scott B. Papp

  • Article |

    A special-purpose quantum simulator, based on a coherently controlled broadband quantum frequency comb produced in a chip-scale dynamically modulated monolithic lithium niobate microresonator, is demonstrated, opening paths for chip-scale implementation of large-scale analogue quantum simulation and computation in the time–frequency domain.

    • Usman A. Javid
    • , Raymond Lopez-Rios
    •  & Qiang Lin

  • Article |

    By tuning the spatial width, the strength and the frequency of a pump beam in two-dimensional cylindrical microcavities supporting stable, robust photonic snake states, a set of broadband and perfectly synchronized two-dimensional frequency combs can be realized.

    • Salim B. Ivars
    • , Yaroslav V. Kartashov
    •  & Carles Milián

  • Article
    | Open Access

    Current LiDAR approaches suffer from congestion issues, which affect measurement performance and increased system complexity. Now researchers demonstrate a chaotic microcomb that exhibits congestion-immune naturally orthogonalized light channels.

    • Ruixuan Chen
    • , Haowen Shu
    •  & Xingjun Wang

  • Letter
    | Open Access

    An ultrabroadband femtosecond enhancement cavity is developed, using gold-coated mirrors and a wedged-diamond-plate input coupler. Simultaneous enhancement of a 22–40 THz offset-free frequency comb allows cavity-enhanced time-domain spectroscopy of gas mixtures based on electro-optic sampling in the mid-infrared range.

    • Philipp Sulzer
    • , Maximilian Högner
    •  & Ioachim Pupeza

  • Article |

    The formation of ultra-short dissipative quadratic solitons is realized using optical parametric amplification at low pump energies and in the presence of substantial temporal walk-off between the pump and signal.

    • Arkadev Roy
    • , Rajveer Nehra
    •  & Alireza Marandi

  • Article |

    The quantum aspect of soliton microcomb from an integrated silicon carbide microresonator is studied in several regimes — below threshold, above threshold and in the soliton regime — using a single-photon optical spectrum analyser for second-order photon correlation measurement.

    • Melissa A. Guidry
    • , Daniil M. Lukin
    •  & Jelena Vučković

  • News & Views |

    The three-dimensional images generated by digital holography are usually limited to a single color. A new technique exploiting frequency combs generates holograms with hundreds of colors at once.

    • Chao Dong
    •  & David Burghoff

  • Article |

    Near-transform-limited 630 fs pulses with 4.5 W of peak power are generated by compensating the dispersion of a quantum cascade laser emitting around 8 μm. Their temporal nature is assessed by a new method called asynchronous upconversion sampling.

    • Philipp Täschler
    • , Mathieu Bertrand
    •  & Jérôme Faist

  • Letter
    | Open Access

    Dual-comb digital holography based on an interferometer composed of two frequency combs of slightly different repetition frequencies and a lensless camera sensor allows highly frequency-multiplexed holography with high temporal coherence.

    • Edoardo Vicentini
    • , Zhenhai Wang
    •  & Nathalie Picqué

  • Article |

    Parametric driving of Kerr solitons – cavity soliton excitation around twice the carrier frequency of solitons – in an optical parametric oscillator with competing nonlinearities look prone to extend the applications of Kerr resonators to random number generators and Ising machines.

    • Nicolas Englebert
    • , Francesco De Lucia
    •  & François Leo

  • News & Views |

    A chip-based optical frequency comb has enabled the realization of a 300 GHz signal with record low phase noise. The development could yield ultra-compact, ultra-low-noise sources for millimetre-wave applications in telecommunications, remote sensing and precision spectroscopy.

    • Yann Le Coq

  • Article |

    By adding a carefully designed amplification section in a passive resonator, but pumping it below the lasing threshold, ultra-stable high-power cavity solitons can be formed, effectively removing the important barrier of having to work in low-loss environments.

    • Nicolas Englebert
    • , Carlos Mas Arabí
    •  & François Leo

  • Article |

    A 300 GHz signal is generated by the combination of a low-noise stimulated Brillouin scattering process, dissipative Kerr soliton comb and optical-to-electrical conversion. A phase noise of −100 dBc Hz−1 is achieved at a Fourier frequency of 10 kHz.

    • Tomohiro Tetsumoto
    • , Tadao Nagatsuma
    •  & Antoine Rolland

  • News & Views |

    Laser-like radiation with a very large spectral coverage is obtained with a comb-like spectrum by concatenating nonlinear processes. Such a light source is extremely useful for detecting molecular trace gases.

    • Akira Ozawa
    •  & Thomas Udem

  • Article |

    When a laser is tuned across a split energy level, photonic diatomic molecules in two linearly coupled microresonators support the formation of self-enforcing solitary waves, featuring coherent, tunable and reproducible microcombs with up to ten times higher net conversion efficiency than the state of the art.

    • Óskar B. Helgason
    • , Francisco R. Arteaga-Sierra
    •  & Victor Torres-Company

  • Letter |

    Observations of decoherence from thermodynamic noise in microresonator soliton frequency combs and laser cooling that reduces soliton thermal decoherence to far below the ambient-temperature limit are described, linking nonlinear photonics and microscopic fluctuations.

    • Tara E. Drake
    • , Jordan R. Stone
    •  & Scott B. Papp

  • Letter |

    Using a femtosecond mode-locked laser and a frequency-locked electric signal, a displacement measurement method that offers a >MHz measurement speed, sub-nanometre precision and a measurement range of more than several millimetres is achieved, facilitating the study of broadband, transient and nonlinear mechanical dynamics in real time.

    • Yongjin Na
    • , Chan-Gi Jeon
    •  & Jungwon Kim

  • Comment |

    As a pioneer in the research on ultra-high-quality dielectric microresonators and their applications in nonlinear optics, frequency metrology and laser science, Mikhail Gorodetsky is badly missed.

    • Igor Bilenko
    • , Vladimir Ilchenko
    •  & Tobias J. Kippenberg

  • Article |

    The combined technique of dual-comb multi-heterodyne detection and Fourier-transform analysis allows simultaneous acquisition and monitoring of the phase pattern of a generic frequency comb demonstrating the high degree of coherence of the emission of two quantum cascade laser frequency combs.

    • Francesco Cappelli
    • , Luigi Consolino
    •  & Saverio Bartalini

  • Article |

    Femtosecond laser pulses can generate self-organized nonlinear gratings in nanophotonic waveguides, providing both quasi-phase-matching and group-velocity matching for second-harmonic generation, and enabling simultaneous χ2 and χ3 nonlinear processes for laser-frequency-comb stabilization.

    • Daniel D. Hickstein
    • , David R. Carlson
    •  & Scott B. Papp

  • Article |

    Efficient power transfer from the pump to the soliton can be achieved through field coupling between two optical resonators, allowing soliton frequency comb generation with tens-to-hundreds-of-fold improvement in conversion efficiency compared with a traditional single-resonator comb.

    • Xiaoxiao Xue
    • , Xiaoping Zheng
    •  & Bingkun Zhou

  • Editorial |

    Frequency combs measure optical frequencies with an unprecedented precision, allowing myriad applications in optical metrology, high-precision spectroscopy, optical atomic clocks, attosecond science, astronomy and, recently, quantum information processing.

  • Review Article |

    Frequency comb spectroscopy is a recent field of research that has blossomed in the past five years. This Review discusses developments in the emerging and rapidly advancing field of atomic and molecular broadband spectroscopy with frequency combs.

    • Nathalie Picqué
    •  & Theodor W. Hänsch

  • Review Article |

    This Review discusses the developments and applications of on-chip optical frequency comb generation based on two concepts—supercontinuum generation in photonic-chip waveguides and Kerr-comb generation in microresonators.

    • Alexander L. Gaeta
    • , Michal Lipson
    •  & Tobias J. Kippenberg

  • Review Article |

    This Review describes quantum frequency combs that operate via photon entanglement, beginning with mode-locked quantum frequency combs followed by energy–time entanglement methods. The use of photonic integration and fibre-optic telecommunications components in enabling the quantum state control are also discussed.

    • Michael Kues
    • , Christian Reimer
    •  & Roberto Morandotti

  • Letter |

    A microphotonic astrocomb is demonstrated via temporal dissipative Kerr solitons in photonic-chip-based silicon nitride microresonators with a precision of 25 cm s–1 (radial velocity equivalent), useful for Earth-like planet detection and cosmological research.

    • Ewelina Obrzud
    • , Monica Rainer
    •  & Tobias Herr

  • News & Views |

    Spatial multiplexing enables the simultaneous generation of several low-noise frequency combs in a single microresonator, promising to enhance a host of applications such as multidimensional coherent spectroscopy.

    • Miro Erkintalo

  • Article |

    A broadband multi-frequency Fabry–Pérot laser diode, when coupled to a high-Q microresonator, can be efficiently transformed to an ~100 mW narrow-linewidth single-frequency light source, and subsequently, to a coherent soliton Kerr comb oscillator.

    • N. G. Pavlov
    • , S. Koptyaev
    •  & M. L. Gorodetsky

  • Letter |

    A nonlinear coherent spectroscopy that uses three slightly different repetition-rate frequency combs is demonstrated. A 2D spectrum with comb resolution is generated using only 365 milliseconds of data, almost 600 times faster than previous approaches.

    • Bachana Lomsadze
    • , Brad C. Smith
    •  & Steven T. Cundiff

  • Article |

    Up to three distinct frequency combs are simultaneously generated from an optical microresonator and a continuous-wave laser, enabling the deployment of dual- and triple-comb-based methods to applications unachievable by current technologies.

    • E. Lucas
    • , G. Lihachev
    •  & T. J. Kippenberg

  • News & Views |

    A chip-based optical frequency comb source has now been successfully used to send 661 Tbit s–1 over 9.6 km of multicore fibre, bringing considerable savings in the energy consumption and size of data transmission equipment.

    • Daniel J. Blumenthal

  • Letter |

    By seeding a non-resonant aluminium-gallium-arsenide-on-insulator nanowaveguide with 10-GHz picosecond pulses at a low pump power of 85 mW, a single energy-efficient frequency comb source carrying 661 Tbit s–1 of data, equivalent to more than the total Internet traffic today, is achieved.

    • Hao Hu
    • , Francesco Da Ros
    •  & Leif K. Oxenløwe

Browse broader subjects

Browse Frequency combs across other nature.com journals