High photon flux table-top coherent extreme ultraviolet source

Abstract

High harmonic generation (HHG) enables extreme ultraviolet radiation with table-top setups. Its exceptional properties, such as coherence and (sub)-femtosecond pulse durations, have led to a diversity of applications. Some of these require a high photon flux and megahertz repetition rates, e.g. to avoid space charge effects in photoelectron spectroscopy. To date this has only been achieved with enhancement cavities. Here, we establish a novel route towards powerful HHG sources. By achieving phase-matched HHG of a megahertz fibre laser we generate a broad plateau (25 eV - 40 eV) of strong harmonics, each containing more than $10^{12}$ photons/s, which constitutes an increase by more than one order of magnitude in that wavelength range. The strongest harmonic (H25, 30 eV) has an average power of 143 $\mu$W ($3\cdot 10^{13}$ photons/s). This concept will greatly advance and facilitate applications in photoelectron or coincidence spectroscopy, coherent diffractive imaging or (multidimensional) surface science.

References in corpus (3)

• Phase-Matched Generation of Coherent Soft-X-Rays
• Direct Frequency Comb Spectroscopy in the Extreme Ultraviolet
• Extreme Nonlinear Optics in a Femtosecond Enhancement Cavity

Cited by in corpus (21)

• Energetic sub-2-cycle laser with 220 W average power
• Generation of micro-J pulses in the deep UV at MHz repetition rates
• Ultra-short-pulse high-average-power Megahertz-repetition-rate coherent extreme-ultraviolet light source
• Bright high-repetition-rate source of narrowband extreme-ultraviolet harmonics beyond 22 eV
• Time- and angle-resolved photoemission spectroscopy of solids in the extreme ultraviolet at 500 kHz repetition rate
• Ultrafast extreme ultraviolet photoemission without space charge
• Coherent Beam Combination of Ultrafast Fiber Lasers
• High-repetition-rate and high-photon-flux 70 eV high-harmonic source for coincidence ion imaging of gas-phase molecules
• Compact 200 kHz HHG source driven by a few-cycle OPCPA
• Table-Top Milliwatt-Class Extreme Ultraviolet High Harmonic Light Source
• Time-Resolved Momentum Microscopy with a 1 MHz High-Harmonic Extreme Ultraviolet Beamline
• Bright, high-repetition-rate water window soft X-ray source enabled by nonlinear pulse self-compression in an antiresonant hollow-core fibre
• High Speed and High Resolution Table-Top Nanoscale Imaging
• High-flux 100-kHz attosecond pulse source driven by a high average power annular laser beam
• Continuously wavelength-tunable high harmonic generation via soliton dynamics
• High repetition pump-and-probe photoemission spectroscopy based on a compact fiber laser system
• Efficient Coherent XUV Generation and Manipulation in Microfluidic Glass Devices
• Simultaneous two-color snapshot view on ultrafast charge and spin dynamics in a Fe-Cu-Ni tri-layer
• Bright, polarization-tunable high repetition rate extreme ultraviolet beamline for coincidence electron-ion imaging
• Towards full surface Brillouin zone mapping by coherent multi-photon photoemission
• Cluster size dependence of high-order harmonic generation