Optical materials and structures

  • Article |

    Stable, dissipative optomechanical solitons are realized using optical fields in a whispering gallery mode resonator by balancing the optomechanical nonlinearities with a tailored modal dispersion.

    • Jing Zhang
    • , Bo Peng
    •  & Lan Yang
  • Review Article |

    This Review discusses the state of the art of interface optics—including refractive optics, meta-optics and moiré engineering—for the control of van der Waals polaritons.

    • Qing Zhang
    • , Guangwei Hu
    •  & Cheng-Wei Qiu
  • Article |

    Gold nanoflake pairs form by self-assembly in an aqueous ligand solution and offer stable and tunable microcavities by virtue of equilibrium between attractive Casimir forces and repulsive electrostatic forces.

    • Battulga Munkhbat
    • , Adriana Canales
    •  & Timur O. Shegai
  • Article |

    High-performance optoelectronic devices that operate in the infrared regime at room temperature exhibit wide-range, active and reversible tunability of the operating wavelengths with black phosphorus.

    • Hyungjin Kim
    • , Shiekh Zia Uddin
    •  & Ali Javey
  • Article |

    Direct infrared nano-imaging of plasmonic waves in graphene carrying high current density reveals the Fizeau drag of plasmon polaritons by fast-moving quasi-relativistic electrons.

    • Y. Dong
    • , L. Xiong
    •  & D. N. Basov
  • Article |

    Room-temperature photon avalanching realized in single thulium-doped upconverting nanocrystals enables super-resolution imaging at near-infrared wavelengths of maximal biological transparency and provides a material platform potentially suitable for other optical technologies.

    • Changhwan Lee
    • , Emma Z. Xu
    •  & P. James Schuck
  • Review Article |

    The current state of programmable photonic integrated circuits is discussed, including recent developments in their building blocks, circuit architectures, electronic control and programming strategies, as well as different application spaces.

    • Wim Bogaerts
    • , Daniel Pérez
    •  & Andrea Melloni
  • Article |

    Self-assembly of cubic diamond crystals is demonstrated, by using precursor clusters of particles with carefully placed ‘sticky’ patches that attract and bind adjacent clusters in specific geometries.

    • Mingxin He
    • , Johnathon P. Gales
    •  & David J. Pine
  • Article |

    The semiclassical quantization rule breaks down for a class of dispersionless flat bands, and their anomalous Landau level spectrum is characterized by their Hilbert–Schmidt quantum distance.

    • Jun-Won Rhim
    • , Kyoo Kim
    •  & Bohm-Jung Yang
  • Article |

    Combining thermal scanning-probe lithography with templating enables the production of high-quality gratings that manipulate light through Fourier-spectrum engineering in ways that are not achievable with conventional gratings.

    • Nolan Lassaline
    • , Raphael Brechbühler
    •  & David J. Norris
  • Article |

    A turnkey regime for soliton microcombs is demonstrated, in which solitons are generated by switching on a co-integrated pump laser, eliminating the need for photonic and electronic control circuitry.

    • Boqiang Shen
    • , Lin Chang
    •  & John E. Bowers
  • Article |

    Wave destabilization is demonstrated in semiconductor ring lasers operating at low pumping levels, where ultrafast gain recovery leads to the emergence of a frequency comb regime owing to phase turbulence.

    • Marco Piccardo
    • , Benedikt Schwarz
    •  & Federico Capasso
  • Article |

    The coupling between light and relativistic free electrons is enhanced through phase matching of electrons with optical whispering-gallery modes in dielectric microspheres and through extended modal lifetimes.

    • Ofer Kfir
    • , Hugo Lourenço-Martins
    •  & Claus Ropers
  • Article |

    precisely controllable integrated optical gyroscope based on stimulated Brillouin scattering is used to study non-Hermitian physics, revealing a four-fold enhancement of the Sagnac scale factor near exceptional points.

    • Yu-Hung Lai
    • , Yu-Kun Lu
    •  & Kerry Vahala
  • Letter |

    A spatially oscillating two-dimensional waveguide array is used to realize a photonic topological insulator in synthetic dimensions with modal-space edge states, unidirectionality and robust topological protection.

    • Eran Lustig
    • , Steffen Weimann
    •  & Mordechai Segev
  • Letter |

    A three-dimensional photonic topological insulator is presented, made of split-ring resonators with strong magneto-electric coupling, which has an extremely wide topological bandgap, forbidding light propagation.

    • Yihao Yang
    • , Zhen Gao
    •  & Hongsheng Chen
  • Letter |

    Cooperative quantum effects in superlattices of quantum dots made of caesium lead halide perovskite give rise to superfluorescence, with the individual emitters interacting coherently to give intense bursts of light.

    • Gabriele Rainò
    • , Michael A. Becker
    •  & Thilo Stöferle
  • Review Article |

    Subwavelength-grating metamaterial structures, their main operation principles and their implementation in integrated photonic devices are reviewed.

    • Pavel Cheben
    • , Robert Halir
    •  & David R. Smith
  • Letter |

    All-inorganic perovskite nanocrystals containing caesium and lead provide low-cost, flexible and solution-processable scintillators that are highly sensitive to X-ray irradiation and emit radioluminescence that is colour-tunable across the visible spectrum.

    • Qiushui Chen
    • , Jing Wu
    •  & Xiaogang Liu
  • Letter |

    Ohmic losses in plasmonic devices can be reduced by exploiting ‘resonant switching’, in which light couples to surface plasmon polaritons only when in resonance and bypasses them otherwise.

    • Christian Haffner
    • , Daniel Chelladurai
    •  & Juerg Leuthold
  • Letter |

    The lowest-energy exciton state in caesium lead halide perovskite nanocrystals is shown to be a bright triplet state, contrary to expectations that lowest-energy excitons should always be dark.

    • Michael A. Becker
    • , Roman Vaxenburg
    •  & Alexander L. Efros
  • Letter |

    A photovoltage field-effect transistor is demonstrated that is very sensitive to infrared light and has high gain.

    • Valerio Adinolfi
    •  & Edward H. Sargent
  • Letter |

    It is an long-standing goal to produce a photonic quantum Hall effect, analogous to the well-known quantum Hall effect for electrons; now an artificial magnetic field for a continuum of photons has been produced, making it possible to observe photonic Landau levels in a photonic quantum Hall material.

    • Nathan Schine
    • , Albert Ryou
    •  & Jonathan Simon
  • Letter |

    Chiral nematic liquid crystals are self-organized helical superstructures in which the helices can stand or lie, and lie in either a uniform or a random way; here, the helices are reversibly driven from a standing arrangement to a uniform lying arrangement and then rotated in-plane—solely by light.

    • Zhi-gang Zheng
    • , Yannian Li
    •  & Quan Li
  • Letter |

    An electronic–photonic microprocessor chip manufactured using a conventional microelectronics foundry process is demonstrated; the chip contains 70 million transistors and 850 photonic components and directly uses light to communicate to other chips.

    • Chen Sun
    • , Mark T. Wade
    •  & Vladimir M. Stojanović
  • Letter |

    Exceptional points are singularities in non-Hermitian systems that can produce unusual effects, and it is shown that a Dirac cone in a photonic crystal can generate a continuous ring of exceptional points through flattening the tip of the cone.

    • Bo Zhen
    • , Chia Wei Hsu
    •  & Marin Soljačić
  • Letter |

    A negative refractive index, a property that does not exist in natural materials, can be produced in so-called metamaterials by combining two building blocks; here it is shown that it is possible to design and fabricate a metamaterial with a negative refractive index that consists of only one type of building block by taking advantage of its crystalline structure, and this approach is demonstrated through an acoustic superlens.

    • Nadège Kaina
    • , Fabrice Lemoult
    •  & Geoffroy Lerosey
  • Letter |

    Organohalide perovskites and preformed colloidal quantum dots are combined in the solution phase to produce epitaxially aligned ‘dots-in-a-matrix’ crystals that have both the excellent electrical transport properties of the perovskite matrix and the high radiative efficiency of the quantum dots.

    • Zhijun Ning
    • , Xiwen Gong
    •  & Edward H. Sargent
  • Letter |

    Visible-frequency hyperbolic metasurfaces defined on single-crystal silver exhibit negative refraction and diffraction-free propagation, as well as strong, dispersion-dependent spin–orbit coupling for propagating surface plasmon polaritons, with device performance greatly exceeding those of previous bulk metamaterial demonstrations.

    • Alexander A. High
    • , Robert C. Devlin
    •  & Hongkun Park
  • Letter |

    Here stable colour changes induced by solid-state electrical switching of ultrathin films of a germanium–antimony–telluride alloy are demonstrated, adding to its established uses in data storage; possible applications include flexible and transparent displays.

    • Peiman Hosseini
    • , C. David Wright
    •  & Harish Bhaskaran
  • Letter |

    Multiple-quantum-well semiconductors can provide one of the largest known nonlinear material responses, which is, however, geometrically limited to light beams polarized perpendicular to the semiconductor layers; by coupling a plasmonic metasurface to the semiconductor heterostructure, this limitation can be lifted, opening a new path towards ultrathin planarized components with large nonlinear response.

    • Jongwon Lee
    • , Mykhailo Tymchenko
    •  & Mikhail A. Belkin