Abstract
High-order harmonic generation (HHG) up to the 21st order of picosecond Nd:YAG laser radiation in the plasmas produced on the surfaces of metal targets is reported. The peculiarity of these studies was the observation of enhanced single (11th) harmonic generating from some plasmas in the vacuum ultraviolet range (80–200 nm), which may originate from the resonance-induced growth of the nonlinear optical response of the medium in the vicinity of strong neutral and ionic transitions causing an increase of single harmonic conversion efficiency. Our studies showed that picosecond pulses can be efficiently converted towards the 50–220 nm wavelength range using HHG in plasma. This also allowed high fluencies of harmonic emission to be achieved by application of longer (picosecond) pulses compared with the commonly used femtosecond pulses.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
