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.
© 2005 Optical Society of America
W. Kornelis, C. P. Hauri, A. Heinrich, F. W. Helbing, M. P. Anscombe, P. Schlup, J. W. G. Tisch, J. Biegert, and U. Keller, "Frequency-sheared, time-delayed extreme-ultraviolet pulses produced by high-harmonic generation in argon," Opt. Lett. 30, 1731-1733 (2005)