Terahertz optics articles within Nature

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  • Article
    | Open Access

    Single-cycle terahertz pumps are used to impulsively trigger ionic hopping in battery solid electrolytes, probing ion transport at its fastest limit and demonstrating the connection between activated transport and the thermodynamics of information.

    • Andrey D. Poletayev
    • , Matthias C. Hoffmann
    •  & Aaron M. Lindenberg

  • Article
    | Open Access

    All-optical, mode-selective manipulation of the crystal lattice can be used to enhance and stabilize ferromagnetism in YTiO3 well above its equilibrium ordering temperature and for many nanoseconds, enabling dynamic engineering of practically useful non-equilibrium functionalities in fluctuating electronic systems.

    • A. S. Disa
    • , J. Curtis
    •  & A. Cavalleri

  • Article |

    By using new on-chip terahertz spectroscopy techniques to measure the absorption spectra of a graphene microribbon as well as the energy waves close to charge neutrality, hydrodynamic collective excitations are observed.

    • Wenyu Zhao
    • , Shaoxin Wang
    •  & Feng Wang

  • Article |

    Bloch wavefunctions of two types of hole in gallium arsenide are reconstructed by measuring the polarization of light emitted by collisions of electrons and holes accelerated by a terahertz laser.

    • J. B. Costello
    • , S. D. O’Hara
    •  & M. S. Sherwin

  • Letter |

    Electro-optic detection in a nonlinear crystal is used to measure coherence properties of vacuum fluctuations of the electromagnetic field and deduce the spectrum of the ground state of electromagnetic radiation.

    • Ileana-Cristina Benea-Chelmus
    • , Francesca Fabiana Settembrini
    •  & Jérôme Faist

  • Letter |

    Watching a single molecule move calls for measurements that combine ultrafast temporal resolution with atomic spatial resolution; this is now shown to be possible by combining scanning tunnelling microscopy with lightwave electronics, through a technique that involves removing a single electron from the highest occupied orbital of a single pentacene molecule in a time window shorter than an oscillation cycle of light.

    • Tyler L. Cocker
    • , Dominik Peller
    •  & Rupert Huber

  • News & Views |

    Intense laser fields can rip electrons from an atom and slam them back into it. By using intense terahertz radiation, this idea can be extended to electrons paired with 'holes' in a semiconductor. See Letter p.580

    • Rupert Huber

  • Letter |

    In the area of metamaterials it is shown that electromagnetic properties can be achieved that are not attainable with natural materials. The main research efforts have been directed towards experimentally realizing materials with negative refractive index, but to extend the potential and design flexibility for novel 'transformation optics' applications, it is of considerable interest to produce a material with unnaturally high refractive index. A broadband, flexible terahertz metamaterial with unprecedented high refractive index, reaching a value of 38.6, is now demonstrated.

    • Muhan Choi
    • , Seung Hoon Lee
    •  & Bumki Min

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