Frequency-sheared, time-delayed extreme-ultraviolet pulses produced by high-harmonic generation in argon.
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.
Kornelis
W
W
Department of Physics, Institute of Quantum Electronics, ETH Zurich, CH-8093 Zürich, Switzerland.
Hauri
C P
CP
Heinrich
A
A
Helbing
F W
FW
Anscombe
M P
MP
Schlup
P
P
Tisch
J W G
JW
Biegert
J
J
Keller
U
U