被动调Q锁模运转Tm∶LuScO_(3)陶瓷激光器特性

Characteristics of Passively Q-switched Mode Locked Tm∶LuScO_(3) Ceramic Laser

利用固态反应烧结方法制做的混合三氧化物陶瓷Tm∶LuScO_(3)作为激光增益介质,在全固态激光器中实现了稳定的调Q锁模运转。利用透过率为3%的输出镜获得最高连续光输出功率为257 mW,中心波长为1993 nm,对应斜效率14.06%。以三种半导体可饱和吸收镜(SESAM)作为锁模启动元件,系统分析了Tm∶LuScO_(3)陶瓷激光器的调Q锁模运转特性,获得最窄锁模脉冲宽度在749~891 ps之间,重复频率121.9 MHz,对应的调Q包络脉冲宽度为50μs,重复频率45.45 kHz,最高输出功率167 mW,中心波长为1987 nm,对应最大单脉冲能量为1.37 nJ。

The stable Q-switched mode-locked operation of Tm∶LuScO_(3) mixed trioxide ceramics prepared by solid-state reaction sintering method is demonstrated in an all solid-state laser.The maximum continuous wave output power is 257 mW with 3%output mirror.The central wavelength is 1993 nm and the slope efficiency is 14.06%.The narrowest mode-locked pulse width is 749-891 ps,the repetition rate is 121.9 MHz,the corresponding Q-switched envelope pulse width is 50μs,the repetition rate is 45.45 kHz,the maximum output power is 167 mW,the center wavelength is 1987 nm,and the corresponding maximum single pulse energy is 1.37 nJ.