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 1–10 of 10 results
Advanced filters: Author: Nicholas Karpowicz Clear advanced filters

  • Combining attosecond metrology and soliton dynamics in hollow-core fibres, the generation of attosecond laser pulses from the deep-ultraviolet to the near-infrared regime and the measurement of attosecond solitons with 350-as durations at optical wavelengths are demonstrated, providing an efficient route to generate intense isolated attosecond pulses complementary to those based on high-harmonic generation in gases.

    • Amelie M. Heinzerling
    • Francesco Tani
    • Nicholas Karpowicz
    ResearchOpen Access
    Nature Photonics
    P: 1-6

  • A continuum spanning from 300 and 3000 nm is used to synthesize a single-cycle field transient and measure its waveform through electro-optic sampling, speeding up this sensitive technique so that it can access the electric field of visible light.

    • Enrico Ridente
    • Mikhail Mamaikin
    • Nicholas Karpowicz
    ResearchOpen Access
    Nature Communications
    Volume: 13, P: 1-7

  • Petahertz-scale optical-field metrology in a pump-probe setting enables the direct observation of how the optical properties of a medium evolve after 1-fs-scale photoinjection.

    • Dmitry A. Zimin
    • Nicholas Karpowicz
    • Vladislav S. Yakovlev
    ResearchOpen Access
    Nature
    Volume: 618, P: 276-280

  • Tunnelling currents inside plasmonic nanostructures are fast enough to gain direct access to the oscillating electric field of near-infrared and visible light, opening up exciting routes towards attosecond metrology of light–matter interaction and unique approaches to spectroscopy.

    • Nicholas Karpowicz
    News & Views
    Nature Photonics
    Volume: 15, P: 408-410

  • Characterization of light pulses is important in order to understand their interaction with matter. Here the authors demonstrate a nonlinear photoconductive sampling method to measure electric field wave-forms in the infrared, visible and ultraviolet spectral ranges.

    • Shawn Sederberg
    • Dmitry Zimin
    • Nicholas Karpowicz
    ResearchOpen Access
    Nature Communications
    Volume: 11, P: 1-8

  • Exposing a fused silica sample to a strong, waveform-controlled, few-cycle optical field increases the dielectric’s optical conductivity by more than 18 orders of magnitude in less than 1 femtosecond, allowing electric currents to be driven, directed and switched by the instantaneous light field.

    • Agustin Schiffrin
    • Tim Paasch-Colberg
    • Ferenc Krausz
    Research
    Nature
    Volume: 493, P: 70-74

  • Direct measurement of the electric field of light in the near-infrared is experimentally demonstrated, showing that careful optical filtering allows the time-resolved detection of electric field oscillations with half-cycle durations as short as 2.1 fs, even with a 5 fs sampling pulse.

    • Sabine Keiber
    • Shawn Sederberg
    • Nicholas Karpowicz
    Research
    Nature Photonics
    Volume: 10, P: 159-162

  • A solid-state device is demonstrated that can detect the absolute offset between the carrier wave and envelope of an ultrashort pulse, the carrier–envelope phase. It holds promise for routine measurement and monitoring of the carrier–envelope phase in attosecond experimental set-ups.

    • Tim Paasch-Colberg
    • Agustin Schiffrin
    • Ferenc Krausz
    Research
    Nature Photonics
    Volume: 8, P: 214-218

  • A vibrational spectroscopy technique that measures the electric field emitted from organic molecules following infrared illumination allows their molecular fingerprints to be separated from the excitation background, even in complex biological samples.

    • Ioachim Pupeza
    • Marinus Huber
    • Ferenc Krausz
    Research
    Nature
    Volume: 577, P: 52-59