High-efficiency second-harmonic generation of superintense ultrashort laser pulses.
The effect of instantaneous cubic nonlinearity on second-harmonic generation of femtosecond laser pulses is investigated. The possibility of improving generation efficiency and shortening pulse duration is analyzed. Energy conversion efficiency of 60% was obtained in an experiment in a 1 mm thickness KDP crystal at the peak intensity of 0.6 TW/cm(2) and the duration of 60 fs.
Mironov
Sergey
S
Institute of Applied Physics RAS, 46 Ul'yanov Street, 603950, Nizhny Novgorod, Russia. Sergey.Mironov@mail.ru
Lozhkarev
Vladimir
V
Ginzburg
Vladislav
V
Khazanov
Efim
E