Bright, Coherent, Ultrafast Soft X-Ray Harmonics Spanning the Water Window from a Tabletop Light Source
M.C. Chen, P. Arpin, T. Popmintchev, M. Gerrity, B. Zhang, M. Seaberg,, M.M. Murnane, H.C. Kapteyn

TL;DR
This paper presents a tabletop light source capable of generating bright, coherent, ultrafast soft X-ray harmonics across the water window, enabling advanced bio-imaging and molecular studies with unprecedented bandwidth and flux.
Contribution
It demonstrates fully phase-matched high-order harmonic generation with the broadest bandwidth and highest photon flux in the water window from a tabletop source.
Findings
Achieved emission spanning the water window spectral region.
Generated the broadest coherent bandwidth (~300 eV) from any light source.
Photon flux at 0.5 keV is 1000 times higher than previous sources.
Abstract
We demonstrate fully phase matched high-order harmonic generation with emission spanning the water window spectral region important for bio- and nano-imaging and a breadth of materials and molecular dynamics studies. We also generate the broadest bright coherent bandwidth (~300eV) to date obtained from any light source, small or large. The harmonic photon flux at 0.5 keV is 10^3 higher than demonstrated previously, making it possible for the first time to demonstrate spatial coherence in the water window. The continuum emission is consistent with a single attosecond burst, that extends bright attosecond pulses into the soft x-ray region.
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
