KNbO_3高效倍频产生427～470nm蓝紫光

High efficiency second harmonic generation of 427-470 nm in KNbO_3

厚1.5 mm的KNbO_ 3晶体在室温下角度相位匹配倍频脉冲参量激光获得427～470nm蓝紫光,能量转换效率超过40％,输出单脉冲蓝紫光的峰功率达60kW.对相位匹配曲线、倍频效率与基波光强的关系和相应匹配角允差作了计算和讨论.

Efficient second harmonic generation from pulsed parametric laser to 427 -470 nm has been obtained in a KNbO3 crystal of in 1.5mm length, by angular tuning at room temperature. The energy conversion efficiency is over 40%, Single pulse blue light z-eaohes 60 kW in peak power. Angular dependence of phase matching wavelength, the relation between conversion efficiency and fundamental intensity and acceptable angular phase mismatch are studied and discussed.