Other photonics articles within Nature Photonics

Featured

  • Obituary |

    Webb’s work helped fundamentally reshape basic research and advanced manufacturing in the generation and application of photonics across disciplines, from fundamental and applied physics to the biosciences.

    • Jeffrey Squier

  • 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

  • News & Views |

    Photonics offers high hopes for next-generation neural network processors. Now it has been shown that even entirely using off-the-shelf photonics allows surpassing speed and energy efficiency of cutting-edge GPUs.

    • Daniel Brunner
    •  & Demetri Psaltis

  • 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

  • Article |

    Adapting the amplitude-modulated light detection and ranging approach to super-resolution microscopy offers a typical axial localization precision of 6.8 nm over the entire field of view and the axial capture range, enabling imaging of biological samples by up to several micrometres in depth.

    • Pierre Jouchet
    • , Clément Cabriel
    •  & Sandrine Lévêque-Fort

  • Article |

    By focusing a sub-relativistic infrared laser pulse onto a silica target, a periodic deflection pattern of attosecond electron pulse trains is observed. It reveals these subcycle charge dynamics with a streaking speed of ~60 μrad as−1.

    • Chuliang Zhou
    • , Yafeng Bai
    •  & Zhizhan Xu

  • News & Views |

    Directly relating the complex second-harmonic-generation field to the second-order susceptibility tensor allows tomographic imaging of nonlinear optical contrast at high frame rates.

    • Paul J. Campagnola

  • News & Views |

    A correlation method that combines ultrasound and fluorescence enables imaging in strongly scattering environments.

    • Allard P. Mosk

  • News & Views |

    Optical clocks held at slightly different heights provide a stringent test of general relativity comparable to space experiments and open new opportunities for clock-based geophysical sensing.

    • Kai Bongs
    •  & Yeshpal Singh

  • News & Views |

    A particular class of focused, pulsed light beams can propagate self-similarly in free space at a fixed group velocity. Now, scientists present a law of refraction that determines how the group velocity of these beams changes as they refract at an interface between two materials.

    • Vincent Ginis

  • 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

  • Article |

    A tomographiac approach to second-harmonic-generation imaging on nonlinear structures is demonstrated, with experiments and three-dimensional reconstructions on a beta-barium borate crystal and various biological specimens performed.

    • Chenfei Hu
    • , Jeffrey J. Field
    •  & Gabriel Popescu

  • News & Views |

    A monolithic chip-scale ring laser gyroscope based on both Brillouin and Sagnac effects provides a sensitivity sufficient to measure sinusoidal rotations with an amplitude as small as 5 degrees per hour, thus enabling the first on-chip Earth rotation measurement.

    • Thibaut Sylvestre

  • Letter |

    A pair of transportable optical lattice clocks with 10−18 uncertainty is developed. The relativistic redshift predicted by the theory of general relativity has been tested at the 10–5 level by the two optical clocks with a height difference of 450 m on the ground.

    • Masao Takamoto
    • , Ichiro Ushijima
    •  & Hidetoshi Katori

  • News & Views |

    Two articles in Nature Photonics demonstrate how Einstein–Podolsky–Rosen entanglement can reduce quantum noise in gravitational-wave interferometers.

    • Pierre-François Cohadon

  • Letter |

    An optoelectronic device that measures and suppresses the phase noise of a source has been realized in an integrated silicon platform.

    • Mohamad Hossein Idjadi
    •  & Firooz Aflatouni

  • 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

  • Article |

    By synthesizing undistorted cross-sectional image reconstructions from multiple conventional images acquired with angular diversity, optical coherence refraction tomography offers greater than threefold improvement in lateral resolution and speckle reduction in imaging tissue ultrastructure, and reconstructs the tissue’s internal refractive index distribution.

    • Kevin C. Zhou
    • , Ruobing Qian
    •  & Joseph A. Izatt

  • 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

  • News & Views |

    Judicious scaling of the waveguide properties of a simple hollow capillary fibre filled with helium allows for powerful pulse temporal compression down to the sub-femtosecond level, further enabling the efficient generation of ultrafast ultraviolet light.

    • Benjamin Wetzel
    •  & Fetah Benabid

  • News & Views |

    High-efficiency, time-domain, near-infrared fluorophores provide multiplexed colour channels for distinct deep bioimaging.

    • Shoujun Zhu
    •  & Xiaoyuan Chen

  • 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 |

    The polarization structure around polarization singularities can exhibit arbitrary fractional rotations when tracing around the singularity, due to an underlying topology of a torus knot imprinted by the chosen ratio of frequencies contained in the light beam.

    • Emilio Pisanty
    • , Gerard J. Machado
    •  & Maciej Lewenstein

  • 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

  • Comment |

    As the most abundant biopolymer on Earth since it can be found in every plant cell wall, cellulose has emerged as an ideal candidate for the development of renewable and biodegradable photonic materials, substituting conventional pigments.

    • Bruno Frka-Petesic
    •  & Silvia Vignolini

  • Letter |

    By time-shifting short-pulse excitation photon energy into prolonged luminescent emission in the time domain, both the number of light signal transducers in sub-15 nm nanoparticles and the near-infrared-in to near-infrared-out conversion efficiency can be maximized, advancing in vivo optical bioimaging.

    • Yuyang Gu
    • , Zhiyong Guo
    •  & Fuyou Li

  • 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

  • Article |

    Two optical signatures of amyloid fibres—luminescence in the blue and a near-infrared signal, which can be observed in in vitro and in vivo tissues—are reported. The findings allow for staining-free characterization of amyloid deposits in human samples and could open the door to innovative diagnostic strategies for neurodegenerative diseases.

    • Jonathan Pansieri
    • , Véronique Josserand
    •  & Vincent Forge

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