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Showing 1–4 of 4 results
Advanced filters: Author: Anton Autere Clear advanced filters

  • Atomically thin transition metal dichalcogenides can be grown on large scale using chemical vapour deposition which, however, determines presence of grain boundaries. Here, the authors report that third-harmonic generation imaging provides excellent sensitivity and fast speed for grain boundary visualization in MoS2.

    • Lasse Karvonen
    • Antti Säynätjoki
    • Zhipei Sun
    ResearchOpen Access
    Nature Communications
    Volume: 8, P: 1-8

  • Realizing efficient on-chip amplification in silicon is challenging due to either non-compatible integration or small gain per unit length of the amplifier material. Here, the authors report ultra-high on-chip optical gain in erbium-based hybrid silicon nitride slot waveguides with a monolithic, CMOS-compatible and scalable atomic-layer deposition process.

    • John Rönn
    • Weiwei Zhang
    • Zhipei Sun
    ResearchOpen Access
    Nature Communications
    Volume: 10, P: 1-9

  • Harmonic generation is a nonlinear optical process occurring in a variety of materials; the higher orders generation is generally less efficient than lower orders. Here, the authors report that the third-harmonic is thirty times stronger than the second-harmonic in monolayer MoS2.

    • Antti Säynätjoki
    • Lasse Karvonen
    • Zhipei Sun
    ResearchOpen Access
    Nature Communications
    Volume: 8, P: 1-8