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Showing 1–9 of 9 results
Advanced filters: Author: Kuniaki Konishi Clear advanced filters

  • Light–matter interactions can be used to manipulate magnetization in solids, but light-controlled magnetization vector motion has not been demonstrated. Here, two-dimensional magnetic oscillations in NiO are manipulated with optical pulses leading to vectorial control of magnetization by light.

    • Natsuki Kanda
    • Takuya Higuchi
    • Makoto Kuwata-Gonokami
    ResearchOpen Access
    Nature Communications
    Volume: 2, P: 1-5

  • Wide-field mid-infrared photothermal imaging is developed to supress the resolution degradation caused by photo-thermal heat diffusion. By employing a single-objective synthetic-aperture imaging with synchronized subnanosecond mid-infrared and visible light sources, spatial resolution of 120 nm is obtained.

    • Miu Tamamitsu
    • Keiichiro Toda
    • Takuro Ideguchi
    Research
    Nature Photonics
    Volume: 18, P: 738-743

  • Spectroscopy in the terahertz range requires polarization modulation. Here, Kan et al.demonstrate a chirality switchable metamaterial for polarization modulation employing deformable spirals. A polarization rotation as high as 28° is achieved, providing a practical and compact polarization modulator for the terahertz range.

    • Tetsuo Kan
    • Akihiro Isozaki
    • Isao Shimoyama
    ResearchOpen Access
    Nature Communications
    Volume: 6, P: 1-7

  • A terahertz pulse shaper based on optical rectification is proposed. The polarization of the terahertz pulses depends on the polarization selection rules for the rectification process in a GaP crystal. The terahertz pulse shaper can arbitrarily control the chirality, phase, pulse duration and frequency of circularly polarized few-cycle terahertz pulses.

    • Masaaki Sato
    • Takuya Higuchi
    • Makoto Kuwata-Gonokami
    Research
    Nature Photonics
    Volume: 7, P: 724-731

  • Describing the laser ablation process with reduction-free data is important for furthering its use in modern manufacturing. Here, fluence maps, correlating laser beam intensity and ablated depth at each point in a full two-dimensional space, provide a method to probe ablation morphology in cases of arbitrary beam and crater profiles.

    • Haruyuki Sakurai
    • Kuniaki Konishi
    • Makoto Kuwata-Gonokami
    ResearchOpen Access
    Communications Materials
    Volume: 2, P: 1-8

  • The study provides new insight into the light-matter interactions of organic based perovskites. The authors do so by investigating the hybrid perovskite methylammonium lead iodide, which is considered a benchmark material for solar cells with high power conversion efficiency.

    • Petr A. Obraztsov
    • Dmitry Lyashenko
    • Alex Zakhidov
    ResearchOpen Access
    Communications Physics
    Volume: 1, P: 1-7