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Opt Lett. 2005 Jul 1;30(13):1731-3.

Frequency-sheared, time-delayed extreme-ultraviolet pulses produced by high-harmonic generation in argon.

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  • 1Department of Physics, Institute of Quantum Electronics, ETH Zurich, CH-8093 Z├╝rich, Switzerland.


We report the production of frequency-sheared high harmonics in argon by control of the envelope and chirp of the electric field of the femtosecond driving laser pulse. Using the classic three-step model of high-harmonic generation, we established a direct link between the properties of the harmonics and the fully characterized driving pulses. A simulation of the single-atom response in the strong-field approximation confirms the simple picture and shows good agreement with the experimental results.

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