
April 24, 2014 17:36 PSP Book - 9in x 6in 05-Rashid-A.-Ganeev-c05
174 Plasma HHG Using Femtosecond Pulses
Figure 5.13 Experimental harmonic spectra generated from manganese
plasma in the case of the absence of gas in the hollow fiber compressor (t
= 25 fs) and random CEP (upper panel), and at 3 bar pressure (t = 3.5
fs) at fixed CEP (φ = 0, middle panel; φ = π/2, bottom panel). φ denotes
the carrier envelope phase. Reproduced from Ref. 66 with permission from
Optical Society of America.
measurements for 25 fs pulses (upper panel) and 3.5 fs pulses
(middle and bottom panels) of the same energy. One can clearly see
the absence of harmonic extension and