Fully stabilized multi-TW optical waveform synthesizer for gigawatt soft-x-ray isolated attosecond pulses

Abstract

A stable 50 mJ three-channel optical waveform synthesizer is demonstrated and used to reproducibly generate a high-order harmonics supercontinuum in the soft-x-ray region. This synthesizer is composed of pump pulses from a 10-Hz-repetition-rate Ti:sapphire pump laser and signal and idler pulses from an infrared two-stage optical parametric amplifier driven by this pump laser. With the full active stabilization of all relative time delays, relative phases, and the carrier-envelope phase, a shot-to-shot stable intense continuum harmonic spectrum is obtained around 60 eV with pulse energy above 0.24 $\mu$J. The peak power of the soft-x-ray continuum is evaluated to be beyond 1 GW with a 140 as transform limit duration. Furthermore, we found a characteristic delay dependence of the multi-cycle waveform synthesizer and established its control scheme. Compared with the one-color case, we experimentally observe an enhancement of the cut-off spectrum intensity by one to two orders of magnitude through the three-color waveform synthesis.

arXiv comment19 pages, 6 figures, this is the submitted version of the paper that has been accepted to Science Advances. The final and revised version will be available after publication in the journal

References in corpus (5)

• Isolated sub-100-attosecond pulse generation via controlling electron dynamics
• Generation of Bright Isolated Attosecond Soft X-Ray Pulses Driven by Multi-Cycle Mid-Infrared Lasers
• Sub-cycle waveform synthesis for effective control of electron localization
• Enhanced multi-colour gating for the generation of high-power isolated attosecond pulses
• Carrier-Envelope Phase Control of a 10 Hz, 25 TW Laser for High-Flux XUV Continuum Generation

Cited by in corpus (8)

• A custom-tailored multi-TW optical electric field for gigawatt soft-x-ray isolated attosecond pulses
• Advent of a gigawatt-class, tabletop, isolated-attosecond-pulse light source
• 100-mJ class, sub-two-cycle, carrier-envelope phase-stable dual-chirped optical parametric amplification
• Optimization of a multi-TW few-cycle 1.7-$\mu$m source based on Type-I BBO dual-chirped optical parametric amplification
• Parametric Waveform Synthesis: a scalable approach to generate sub-cycle optical transients
• Free-electron tomography of few-cycle optical waveforms
• Stimulated-Raman-scattering amplification of attosecond XUV pulses with pulse-train pumps and application to local in-depth plasma-density measurement
• Perturbed three-channel waveform synthesizer for efficient isolated attosecond pulse generation and characterization