Bright, high-repetition-rate water window soft X-ray source enabled by nonlinear pulse self-compression in an antiresonant hollow-core fibre

Abstract

Bright, coherent soft X-ray (SXR) radiation is essential to a variety of applications in fundamental research and life sciences. So far, high photon flux in this spectral region can only be delivered by synchrotrons, free electron lasers or high-order harmonic generation (HHG) sources, which are driven by kHz-class repetition rate lasers with very high peak powers. Here, we establish a novel route toward powerful and easy-to-use SXR sources by presenting a compact experiment, in which nonlinear pulse self-compression to the few-cycle regime is combined with phase-matched HHG in a single, helium-filled antiresonant hollow-core fibre (ARHCF). This enables the first 100 kHz-class repetition rate, table-top SXR source, that delivers an application-relevant flux of 2.8*10^6 Photons/s/eV around 300 eV. The fibre-integration of temporal pulse self-compression (leading to the formation of the necessary strong-field waveforms) and pressure controlled phase-matching will allow compact, high repetition rate laser technology, including commercially available systems, to drive simple and cost-effective, coherent high-flux SXR sources.

arXiv comment12 pages, 3 figures

References in corpus (7)

• Phase-Matched Generation of Coherent Soft-X-Rays
• Bright, Coherent, Ultrafast Soft X-Ray Harmonics Spanning the Water Window from a Tabletop Light Source
• High-energy pulse self-compression and ultraviolet generation through soliton dynamics in hollow capillary fibres
• High photon flux table-top coherent extreme ultraviolet source
• Water window soft x-ray source enabled by 25-W few-cycle mid-IR OPCPA at 100 kHz
• Effect of anti-crossings with cladding resonances on ultrafast nonlinear dynamics in gas-filled PCFs
• High-repetition-rate and high-photon-flux 70 eV high-harmonic source for coincidence ion imaging of gas-phase molecules

Cited by in corpus (6)

• High-flux 100-kHz attosecond pulse source driven by a high average power annular laser beam
• Efficient Coherent XUV Generation and Manipulation in Microfluidic Glass Devices
• Extension of the bright high-harmonic photon energy range via nonadiabatic critical phase matching
• Laboratory-Based Correlative Soft X-ray and Fluorescence Microscopy in an Integrated Setup
• Robust isolated attosecond pulse generation with self-compressed sub-cycle drivers from hollow capillary fibers
• Apparatus for generation of nanojoule-class water-window high-order harmonics