guest ::
| Home > Publications database > Tailored and Enhanced Isolated Attosecond Pulses in the Water-Window using a Parametric Waveform Synthesizer |
| Home > Publications database > Tailored and Enhanced Isolated Attosecond Pulses in the Water-Window using a Parametric Waveform Synthesizer |
| Poster | PUBDB-2025-04932 |
; ; ; ; ; ;
2025
Abstract: Isolated attosecond pulses (IAPs) generated via high-harmonic generation (HHG) have emerged as one of the most powerful tools for the study of ultrafast atomic and molecular dynamics. Tailoring the HHG emission that is, dynamically modifying their spectral content or temporal shape for a specific experiment is difficult since it requires exquisite control of the driving electric field waveform on sub-cycle time scales. Here, we present tailored IAP generation with enhanced efficiency using a two-channel parametric waveform synthesizer, which can generate precisely controlled sub-cycle pulses.[1] We are able to show experimentally how minute changes in the waveform allow us to enhance the HHG-efficiency and modify the spectral content as well as the time domain structure of the IAPs in the water-window (WW) spectral region.[2] Combined with our novel in-situ waveform characterization technique [3], which allows the measurement of the complete waveform driving HHG, and our macroscopic HHG simulation tools, we can identify the microscopic and macroscopic origins of the observed efficiency enhancement and spectro-temporal tailoring of the IAPs.As current ultrashort pulse generation schemes [4] are reaching the sub-cycle limit, where HHG is highly sensitive to fine waveform details, understanding HHG driven by strongly non-sinusoidal fields is paramount for harnessing the full capabilities of these sources in the next generation of table-top HHG-based spectroscopy experiments.[1] Rossi, Giulio Maria, et al. “Sub-cycle millijoule-level parametric waveform synthesizer for attosecond science.” Nature Photonics 14.10 (2020): 629-635.[2] Silva-Toledo Miguel-Angel et al. “Efficient water-window isolated attosecond pulse generation with tailored sub-cycle fields“, Atto Conference (2025)[3] Kubullek, Maximilian, et al. "Complete Electric Field Characterization of Ultrashort Multicolor Pulses." Ultrafast Science 5 (2025): 0081.[4] Travers, John C., et al. "High-energy pulse self-compression and ultraviolet generation through soliton dynamics in hollow capillary fibres." Nature Photonics 13.8 (2019): 547-554.
|
The record appears in these collections: |
PDF
PDF (PDFA)