Amplitude and phase control of attosecond light pulses.
We report the generation, compression, and delivery on target of ultrashort extreme-ultraviolet light pulses using external amplitude and phase control. Broadband harmonic radiation is first generated by focusing an infrared laser with a carefully chosen intensity into a gas cell containing argon atoms. The emitted light then goes through a hard aperture and a thin aluminum filter that selects a 30-eV bandwidth around a 30-eV photon energy and synchronizes all of the components, thereby enabling the formation of a train of almost Fourier-transform-limited single-cycle 170 attosecond pulses. Our experiment demonstrates a practical method for synthesizing and controlling attosecond waveforms.
López-Martens
Rodrigo
R
Department of Physics, Lund Institute of Technology, P. O. Box 118, SE-221 00 Lund, Sweden.
Varjú
Katalin
K
Johnsson
Per
P
Mauritsson
Johan
J
Mairesse
Yann
Y
Salières
Pascal
P
Gaarde
Mette B
MB
Schafer
Kenneth J
KJ
Persson
Anders
A
Svanberg
Sune
S
Wahlström
Claes-Göran
CG
L'huillier
Anne
A