Coherent x-rays driven by ultrashort-pulse lasers: generation, application, and prospects

Henry C. Kapteyn

doi:10.1117/12.2223355

13 May 2016 Coherent x-rays driven by ultrashort-pulse lasers: generation, application, and prospects

Henry C. Kapteyn

Author Affiliations +

Proceedings Volume 9835, Ultrafast Bandgap Photonics; 98350T (2016) https://doi.org/10.1117/12.2223355
Event: SPIE Defense + Security, 2016, Baltimore, MD, United States

Abstract

Ultrashort laser pulses represent an ideal starting point for frequency conversion of light to almost any wavelength from the THz to x-rays. High-harmonic upconversion (HHG) is a unique process enabled by the combined strong field laser field and the few-cycle pulse duration of a femtosecond laser pulse. HHG makes it possible to generate coherent light in the spectral region from the vacuum-UV into the x-ray region at sub-nm wavelengths. HHG sources are now finding increasingly diverse application for both science and technology, in topics ranging from basic studies of atomic processes, to materials dynamics revealed through time and angle-resolved photoemission. Furthermore, the coherent nature of the HHG process makes possible unprecedented control over light in a new region of the spectrum, making it possible to, for example, control the polarization state and spectral bandwidth, creating the most complex time-domain waveforms ever measured and characterized. Here we review recent work, as well as efforts at commercial implementation of HHG sources.

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Henry C. Kapteyn "Coherent x-rays driven by ultrashort-pulse lasers: generation, application, and prospects", Proc. SPIE 9835, Ultrafast Bandgap Photonics, 98350T (13 May 2016); https://doi.org/10.1117/12.2223355

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KEYWORDS

X-rays

Coherence imaging

Extreme ultraviolet

X-ray diffraction

X-ray microscopy

Magnetism

X-ray imaging

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