Pumping Of Kn Crystal With Cr:LiSAF Lasers

In this paper we described and simulated generation of blue pulse (460nm) by nonlinear KN(KNbO3) crystal,that pumped by femtosecond diode pumped Cr:LiSAF lasers. Our simulation show that, by focusing of laser oscillator output pulses with characteristics such as 860nm wavelength, 200fs,330MHz repetition rate 14o Pico joule ( PJ) energy in KN crystal with 3mm length at 22 0C by 15 mm lens in less than 20 micrometer spot size with single pass produce pulses with 42pJ energy,425fs, 30 % optical efficiency and 1 % total efficiency