
April 24, 2014 17:36 PSP Book - 9in x 6in 05-Rashid-A.-Ganeev-c05
Stable Generation of High-Order Harmonics of Femtosecond Laser Radiation 149
Ti:sapphire laser. The remaining pulse was compressed in a prism
compressor and then further compressed using a hollow core fiber
and chirped mirrors, resulting in 250 μJ, 3.5 fs pulses. The driving
(probe) pulse was delayed with respect to the heating pulse by 40 ns
to give the plasma the time to expand away from the target surface
to allow the driving pulse to pass through the plasma without being
clipped by the target.
Target rotation apparatus consisted of three linear stages driven
by stepper motors along