
April 24, 2014 17:29 PSP Book - 9in x 6in 03-Rashid-A.-Ganeev-c03
Chapter 3
Low-Order Harmonic Generation in
Plasma Plumes Using Nanosecond and
Picosecond Driving P ulses
Initially, low-order harmonic generation using relatively long pulses
was aimed to define the conditions of efficient third harmonic
(3H) generation in plasma plumes [1]. The advantages of plasma
harmonics could largely be realized with the use of a low-excited and
weakly ionized plasma, because the limiting processes governing the
dynamics of laser frequency conversion would play a minor role in
this case. Attention was drawn to this feature early in the study of
third harmonic generation ...