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Showing 1–5 of 5 results
Advanced filters: Author: Aaron J. Sternbach Clear advanced filters

  • The authors use time-resolved scanning near-field optical microscopy to probe the ultrafast excitonic processes and their impact on waveguide operation in transition metal dichalcogenide crystals. They observe significant modulation of the complex index by monitoring waveguide modes on the fs time scale, and identify both coherent and incoherent manipulations of WSe2 excitonic resonances.

    • Aaron J. Sternbach
    • Simone Latini
    • D. N. Basov
    ResearchOpen Access
    Nature Communications
    Volume: 11, P: 1-6

  • An optical method images nonlinear optical processes in waveguides with femtosecond and nanometre precision. The approach is used to achieve phase-matched second-harmonic generation in 3R-MoS2 waveguides.

    • Ding Xu
    • Zhi Hao Peng
    • Milan Delor
    Research
    Nature Nanotechnology
    Volume: 20, P: 374-380

  • Employing an oxidation-activated charge transfer strategy to oxidize transition-metal dichalcogenides into transition-metal oxides, the authors imprint plasmonic cavities with laterally abrupt doping profiles and nanoscale precision demonstrating plasmonic whispering-gallery resonators.

    • Brian S. Y. Kim
    • Aaron J. Sternbach
    • D. N. Basov
    Research
    Nature Materials
    Volume: 22, P: 838-843

  • Excitons play an important role in the optical properties of 2D semiconductors, but their spatial characterization is usually constrained by the diffraction limit. Here, the authors report near-field optical spectroscopy of 2D transition metal dichalcogenides with 20 nm resolution, revealing their spatially dependent excitonic spectra and complex dielectric function.

    • Shuai Zhang
    • Baichang Li
    • D. N. Basov
    ResearchOpen Access
    Nature Communications
    Volume: 13, P: 1-8