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Bright, Coherent, Ultrafast Soft X-Ray Harmonics Spanning the Water Window from a Tabletop Light Source

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TLDR
This work extends bright, spatially coherent, attosecond pulses into the soft x-ray region for the first time and generates the broadest bright coherent bandwidth to date from any light source, small or large, that is consistent with a single subfemtosecond burst.
Abstract
We demonstrate fully phase-matched high harmonic emission spanning the water window spectral region important for nano- and bioimaging and a breadth of materials and molecular dynamics studies. We also generate the broadest bright coherent bandwidth (� 300 eV) to date from any light source, small or large, that is consistent with a single subfemtosecond burst. The harmonic photon flux at 0.5 keV is 10 3 higher than demonstrated previously. This work extends bright, spatially coherent, attosecond pulses into the soft x-ray region for the first time.

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Citations
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Journal ArticleDOI

Bright Coherent Ultrahigh Harmonics in the keV X-ray Regime from Mid-Infrared Femtosecond Lasers

TL;DR: By guiding a mid-infrared femtosecond laser in a high-pressure gas, ultrahigh harmonics can be generated that emerge as a bright supercontinuum that spans the entire electromagnetic spectrum from the ultraviolet to more than 1.6 kilo–electron volts, allowing, in principle, the generation of pulses as short as 2.5 attoseconds.
Journal ArticleDOI

Extremely high-intensity laser interactions with fundamental quantum systems

TL;DR: In this article, a review of recent investigations on high-energy processes within the realm of relativistic quantum dynamics, quantum electrodynamics, and nuclear and particle physics, occurring in extremely intense laser fields is presented.
Journal ArticleDOI

The attosecond nonlinear optics of bright coherent X-ray generation

TL;DR: In this paper, the Roentgen X-ray tube was used for high-order harmonic generation with small-scale femtosecond laser technology, which combines the microscopic attosecond science of atoms driven by intense laser fields with the macroscopic extreme nonlinear optics of phase matching.
Journal ArticleDOI

Streaking of 43-attosecond soft-X-ray pulses generated by a passively CEP-stable mid-infrared driver.

TL;DR: The results prove that the popular and broadly available scheme of post-compressing the output of white-light-seeded optical parametric amplifiers is adequate to produce high-contrast isolated attosecond pulses covering the L-edges of silicon, phosphorous and sulfur.
Journal ArticleDOI

Time-resolved x-ray absorption spectroscopy with a water window high-harmonic source

TL;DR: Time-resolved x-ray absorption spectroscopy (TR-XAS) has so far practically been limited to large-scale facilities, to subpicosecond temporal resolution, and to the condensed phase, but this realization with a temporal resolution in the low femtosecond range is reported.
References
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M. V. Ammosov
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Journal ArticleDOI

High-order harmonic generation from atoms and ions in the high intensity regime.

TL;DR: It is found that ions can produce harmonics comparable in strength to those obtained from neutrals, and that the emission extends to much higher order.
Journal ArticleDOI

Phase-Matched Generation of Coherent Soft X-rays

TL;DR: Phase-matched harmonic conversion of visible laser light into soft x-rays was demonstrated and the recently developed technique of guided-wave frequency conversion was used to upshift light from 800 nanometers to the range from 17 to 32 nanometers.
Journal ArticleDOI

Generation of coherent soft x rays at 2.7 nm using high harmonics

TL;DR: In this article, a Ti:sapphire laser centered at 800nm, with 26fs pulse duration, was used to generate coherent soft x-ray harmonics, at wavelengths down to 2.7nm (460eV) in He, and 5.2nm (239eV).
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