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Table-top femtosecond soft X-ray laser by collisional ionization gating
An improved table-top femtosecond soft X-ray laser with a gain duration of 450 fs is reported.
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Article
A high-intensity highly coherent soft X-ray femtosecond laser seeded by a high harmonic beam
Synchrotrons have for decades provided invaluable sources of soft X-rays, the application of which has led to significant progress in many areas of science and technology. But future applications of soft X-ray...
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Article
Experimental observation of anomalous high harmonics at low intensities
A variety of complex phenomena occurs when an ultra-short laser pulse interacts with atoms in the 1013 W/cm2 range: non-sequential ionisation, electron recollision, and Freeman resonances. We show that high-harmo...