Terahertz optics articles from across Nature Portfolio

Terahertz optics is a branch of optics and photonics that studies electromagnetic radiation with a wavelength between 0.1 and 1 millimetre, so-called because this corresponds to a frequency of approximately one terahertz (a trillion hertz). Terahertz radiation is relevant for applications in security screening,

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  • News & Views |

    Quantum dots can convert terahertz photons into visible light. This mechanism is used to develop a semiconductor-based room-temperature terahertz camera that can simultaneously record the field strength and polarization states of a terahertz beam. The proposed detector has fast speeds and can be manufactured at the wafer-scale.

    Nature Nanotechnology 17, 1247-1248
  • News & Views |

    The spatiotemporal profile of the electric field around a high-energy electron beam was visualized using an ultrafast technique based on electro-optic sampling. By investigating the formation of the Coulomb field it was possible to experimentally confirm the validity of the predictions of special relativity regarding electromagnetic fields.

    Nature Physics 18, 1404-1405
  • Comments & Opinion
    | Open Access

    In order for terahertz devices to reach technological maturity, robust characterization methods and reliable metrics for comparison between studies must be defined. In this comment, the authors describe the challenges faced in obtaining robust power measurements in the terahertz regime, and summarize recent efforts to establish standards for this field.

    • Enrique Castro-Camus
    • , Martin Koch
    •  & Andreas Steiger
  • News & Views |

    The phase of terahertz waves can now be precisely modulated electronically using a chip-based digitally coded phase shifter. The achievement is a step towards chip-scale integrated terahertz technology.

    • Vassili Fedotov
    Nature Photonics 15, 715-716