Coversion of a chirped radiation pulse into the second harmonic in a KDP crystal
The results of investigations on conversion of the radiation with the wavelength l = 950 and pulse duration 100 ps into the second-harmonic pulse is reported. It is shown that the duration of the second-harmonic pulse is twice shorter than that of the fundamental frequency. The line width of the converted radiation remains to be unchanged. The beam quality parameter М2 increases from 1.16 to 1.56. The maximum conversion efficiency is found to be 12.2 %.