Other photonics articles within Nature Photonics

Featured

  • News & Views |

    The injection of rare-earth-doped upconversion nanoparticles into the eyes of mice allows them to visualize near-infrared light with a wavelength of ~1 μm.

    • Guochen Bao
    •  & Dayong Jin

  • 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.

  • News & Views |

    Low-cost spectroscopy, mobile phone-based imaging and laser-processed paper sensors are all examples of how photonics could help tackle India’s healthcare and environmental monitoring challenges.

    • Oliver Graydon

  • 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 |

    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 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

  • Comment |

    Osamu Shimomura’s 90-year life came to an end on 19 October 2018. Throughout his long and exceedingly fruitful career, the Japanese marine biologist and chemist passionately explored the phenomenon of bioluminescence in living organisms, earning a Nobel Prize in the process.

    • Yasushi Hiraoka

  • 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

  • Letter |

    Self-organization far from thermal equilibrium in a thermo-optical feedback process occurring in a random array of Fabry–Pérot resonators is shown, adding new capability to dynamic self-assembly in creating materials with fine-tuned adaptive responses.

    • Chad Ropp
    • , Nicolas Bachelard
    •  & Xiang Zhang

  • Article |

    A three-dimensionally entangled Greenberger–Horne–Zeilinger state, where all three photons reside in a qutrit space, is generated by developing a new multi-port in combination with a novel four-photon source entangled in orbital angular momentum.

    • Manuel Erhard
    • , Mehul Malik
    •  & Anton Zeilinger

  • 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

  • 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

  • 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

  • News & Views |

    In the quest for nanoscopy with super-resolution, consensus from the imaging community is that super-resolution is not always needed and that scientists should choose an imaging technique based on their specific application.

    • Rachel Won

  • Article |

    By employing difference-frequency generation, a mid-infrared dual-comb spectrometer covering the 2.6 to 5.2 µm range is demonstrated with comb-tooth resolution, sub-MHz frequency precision and accuracy, and a spectral signal-to-noise ratio as high as 6,500.

    • Gabriel Ycas
    • , Fabrizio R. Giorgetta
    •  & Nathan R. Newbury

  • News & Views |

    At the 24th General Congress of the International Commission for Optics in Tokyo, photonics-based sensing and simulations were shown to benefit research into phenomena that span the nanometre to astronomical range.

    • Noriaki Horiuchi

  • Editorial |

    The Nobel Prize-winning observation of gravitational waves has required laser interferometry to be pushed to extreme limits of sensitivity.

  • Letter |

    Self-starting harmonic frequency comb generation with a THz repetition rate in a quantum cascade laser is demonstrated. The mode spacing uniformity is verified to within 5 × 10−12 parts of the central frequency. The findings extend the range of applications of quantum cascade laser frequency combs.

    • Dmitry Kazakov
    • , Marco Piccardo
    •  & Federico Capasso

  • News & Views |

    Applications of the concept of structured light are not limited to optical communications, metrology, and probing and sensing, they can also go beyond optics.

    • Rachel Won

  • Article |

    The observation of soliton crystals in monolithic Kerr microresonators is reported. The physics of such resonators is explored in a regime of dense soliton occupation, offering a way to increase the efficiency of Kerr combs.

    • Daniel C. Cole
    • , Erin S. Lamb
    •  & Scott B. Papp

  • Article |

    By driving a high-Q fibre-based Fabry–Pérot microresonator with periodic, picosecond optical pulses, deterministic generation of stable femtosecond dissipative cavity solitons has been experimentally realized.

    • Ewelina Obrzud
    • , Steve Lecomte
    •  & Tobias Herr

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