Abstract
Isolated attosecond pulses at the Carbon K-edge (284 eV) hold the promise to image, probe and control fundamental biological processes with extreme temporal and spatial resolution. Despite constant progress for the last decade, current isolated attosecond pulse generation techniques are limited to the sub-150 eV range due to the difficulties associated with increasing the emitted photon energy in high harmonic generation for common near-IR driving lasers. Extension of current attosecond pulse generation techniques into the so called water window (284-543 eV) is possible by ponderomotive scaling of the generated attosecond bursts in high-harmonic generation using an intense long wavelength driving laser [1,2]. Several techniques for the generation of isolated attosecond pulses have been investigated, amongst them the attosecond lighthouse [3], where a spatio-temporally coupled driving laser is used in to generate high harmonic radiation, leading to spatially separated emission of attosecond pulses, which coupled with spatial filtering results in an isolated attosecond pulse.
© 2015 IEEE
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