Abstract

High-energy coherent continuum radiation is generated by the interaction of rare gases with a high-power many-cycle laser field, utilizing the interferometric polarization gating technique. A narrow temporal gate is formed in the laser pulse within which the extreme ultraviolet (XUV) emission is restricted. An analytical expression for the gate function is derived. A super-XUV continuum down to 15 nm, broad enough to support synthesis of single pulses of 260 as duration and a few tens of nanojoule energy, has been measured. These results directly challenge the perspectives of single-attosecond pulse XUV-pump–XUV-probe applications.

© 2009 Optical Society of America

Generation of extreme ultraviolet continuum radiation driven by a sub-10-fs two-color field

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Extreme ultraviolet supercontinua supporting pulse durations of less than one atomic unit of time

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Waveform-controlled near-single-cycle milli-joule laser pulses generate sub-10 nm extreme ultraviolet continua

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Attosecond pulse extreme-ultraviolet photoionization in a two-color laser field

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