Publications by authors named "Kyunghoon Yeom"
The temporal characterization of a laser pulse is an important task in studying ultrafast laser-matter interactions. It is ideal to measure the temporal profile of the laser pulse with a single laser shot when the repetition rate is low or its interaction with matter is unstable. Here we report a new approach for the single-shot temporal characterization of a laser pulse, based on the TIPTOE (tunneling ionization with a perturbation of the time-domain observation of an electric field) method.
View Article and Find Full Text PDFWe demonstrate a novel pulse shaper in which an incident laser beam is angularly dispersed by a first prism, and then it is split into separate beams using multiple prisms. Since this new pulse shaper offers independent control of the amplitude and phase of the separate beams, it can produce pulses having desired temporal shapes. Furthermore, it imposes a significant amount of negative group delay dispersion (GDD) over an octave spectrum near visible, which can compensate for a positive GDD accumulated in the process of spectral broadening.
View Article and Find Full Text PDFArticle Synopsis
- High-harmonic radiation can be produced by reflecting an ultra-intense laser off an over-dense plasma, known as a plasma mirror, which holds potential for creating intense attosecond pulses in extreme ultraviolet and X-ray ranges.
- However, using solid targets for this process leads to damage, complicating their application in time-resolved studies that require extensive data collection.
- The study shows that liquid plasma mirrors can continuously generate high-harmonic radiation, enabling stable and high-repetition-rate attosecond light sources for advanced research in ultrafast laser-matter interactions.