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使用半导体可饱和吸收镜,实现了光纤耦合半导体激光抽运Tm:YAP晶体的全固态连续波锁模激光运转.根据ABCD矩阵理论设计激光器参数,通过控制谐振腔的像散和模式分布,获得了稳定的皮秒锁模激光输出.当最大抽运功率为7.96 W时,获得锁模激光的最大平均输出功率为0.73 W,相应的斜效率为15.6%.此时锁模脉冲宽度约为1.7 ps,对应的重复频率为88.7 MHz,中心谱线为1982.4 nm.结果表明:Tm:YAP晶体是一种具有较好的热学、机械性能的2 μm波段超快激光晶体.“,”A passively continuous-wave (CW) mode-locked Tm:YAP laser with a semiconductor saturable-absorber mirror was reported by using laser-diode as pump source. According to the ABCD matrix theory, the astigmatism and the stability in the cavity of the laser were theoretically analyzed. Stable continuous-wave mode-locked ps-pulses were achieved. The average output power of 0.73 W was obtained with the absorbed pump power of 7.96 W and the corresponding slope efficiency was 15.6%. The pulse duration was measured to be 1.7 ps with a repetition rate of 88.7 MHz at the central wavelength of 1 982.4 nm, and the corresponding slope efficiency was 15.6%. The results show that the Tm:YAP crystal has good thermal mechanical properties, which is very favorable for generating ultrashort pulses at around 2 μm.