【摘要】 介绍了以激光二极管抽运Nd∶YAG晶体的倍频激光器为抽运源,高平均功率准连续运转的全固态宽调谐掺钛蓝宝石(Ti∶sapphire)激光器。自由运转时,在抽运光功率为16 W,透过率为30%时,获得了最高6.44 W的掺钛蓝宝石激光输出,相应光光转换效率大于40%。为了获得宽波段可调谐激光输出,采用石英布氏棱镜对作腔内色散元件,通过调节输出镜获得了调谐范围740~880 nm,线宽约1 nm的宽波段输出。在抽运光功率为11.5 W时,最高输出功率为2.87 W,相应的光光转换效率为25%。作为对比,又研究了重火石棱镜作为腔内色散元件时,掺钛蓝宝石激光器的调谐输出特性,实验表明输出激光的线宽明显变窄,但输出功率却显著下降。更多还原

【Abstract】 An all solid state broadly tunable high-a ve rage-power laser source based on the Ti∶sapphire crystal pumped by a fre quency-doubled laser diode pumped Nd∶YAG laser is reported in this paper. Without any dispersion elements in cavity, 6.44 W of Ti: sapphire laser output is obtained when the pump power is 16 W and the transmissivity of output mirror is 30%, the optical-to-optical conversion efficiency is higher than 40%. With th e use of two intracavity quartz Brewster prisms, the Ti∶sapphire laser is tunable from 740 nm to 880 nm and the linewidth is about 1nm. The maximum avera ge output power is 2.87 W at 11.5 W pump power, and the optical-to-optical conve rsion efficiency is about 25%. For comparison, tunable characteristic of two fl int-glass prism using as dispersion elements is studied, and the experiment dem onstrates that the linewidth of the tunable laser is narrow down notably, but th e output power is falled obviously.更多还原