Abstract
The generation of high intensity (~1015Wcm−2) single-cycle (<10fs) short-wavelength infrared (SWIR - central wavelength ~1.7 μm) pulses allows for the generation of isolated attosecond pulses in the ‘water window’ (280–530eV) via high harmonic generation (HHG), enabling ultrafast element-specific dynamical imaging across a broad spectral region of high interest. Sub-millijoule sub-10fs pulses can be routinely generated via self phase modulation in a gas filled hollow-core fibre [1], with the SWIR being generated from the idler of an optical parametric amplifier (OPA) pumped by a commercial Ti:Sapph laser system. Utilizing the idler ensures passive carrier envelope phase stabilization, allowing for the generation of isolated attosecond pulses [2].
© 2015 IEEE
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