Journal
OPTICS EXPRESS
Volume 17, Issue 7, Pages 5139-5146Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.17.005139
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Funding
- National Natural Science Foundation of China [10774054, 10734080]
- National Basic Research Program of China [2006CB806006]
- Huadong Normal university
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High-order harmonic generation in the presence of a strong terahertz field is investigated, and phase stabilization of the few-cycle laser pulses is extended to the extremely ultraviolet region. It is found that the strong terahertz field significantly breaks the symmetry between the consecutive half-cycle and greatly extends the harmonic cutoff, producing both odd and even harmonics which are covered with an extremely broad bandwidth and well locked in phase. These results can support the generation of few-cycle attosecond pulse trains with stabilized carrier-envelope phase from pulse to pulse, and also enables the generation of phase-stabilized pulse train with tunable wavelength. (C) 2009 Optical Society of America
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