Advanced search

Filter By:

Journal Check one or more journals to show results from those journals only.

Choose more journals

Article type Check one or more article types to show results from those article types only.
Subject Check one or more subjects to show results from those subjects only.
Date Choose a date option to show results from those dates only.

Custom date range

Clear all filters
Sort by:
Showing 1–9 of 9 results
Advanced filters: Author: Ofer Kfir Clear advanced filters

  • A simple method is demonstrated for high-order harmonic generation with fully controlled (linear, elliptical and circular) polarization. Its conversion efficiency is comparable to those of conventional high-order harmonic methods. This technique potentially has a broad range of applications from ultrafast circular dichroism to attosecond quantum optics.

    • Avner Fleischer
    • Ofer Kfir
    • Oren Cohen
    Research
    Nature Photonics
    Volume: 8, P: 543-549

  • The coupling between light and relativistic free electrons is enhanced through phase matching of electrons with optical whispering-gallery modes in dielectric microspheres and through extended modal lifetimes.

    • Ofer Kfir
    • Hugo Lourenço-Martins
    • Claus Ropers
    Research
    Nature
    Volume: 582, P: 46-49

  • In measurements that employ phase retrieval algorithms, such as coherent diffraction imaging, reconstruction of one-dimensional signals is challenging due to ambiguity issues. Here, the authors demonstrate super-resolution coherent imaging of one-dimensional objects by utilizing sparsity prior information.

    • Pavel Sidorenko
    • Ofer Kfir
    • Oren Cohen
    ResearchOpen Access
    Nature Communications
    Volume: 6, P: 1-8

  • A silicon nitride microresonator is used for coherent phase modulation of a transmission electron microscope beam, with future applications in combining high-resolution microscopy with spectroscopy, holography and metrology.

    • Jan-Wilke Henke
    • Arslan Sajid Raja
    • Tobias J. Kippenberg
    ResearchOpen Access
    Nature
    Volume: 600, P: 653-658

  • Light induced magnetization dynamics can be as fast as few tens of femtoseconds. Here, Zayko et al show ultrafast microscopy based on high-harmonic radiation for direct imaging of ultrafast phenomena and capture femtosecond spin dynamics at the nanoscale.

    • Sergey Zayko
    • Ofer Kfir
    • Claus Ropers
    ResearchOpen Access
    Nature Communications
    Volume: 12, P: 1-8

  • Semiconductor photoelectrodes for solar hydrogen production by water photoelectrolysis require stable and abundant visible-light absorbers such as iron oxide. Although this material suffers from poor transport properties for efficient charge-carrier generation and collection, these drawbacks can now be addressed by using resonant light trapping in ultrathin films designed as optical cavities.

    • Hen Dotan
    • Ofer Kfir
    • Avner Rothschild
    Research
    Nature Materials
    Volume: 12, P: 158-164