利用一片GTI镜补偿腔内色散,并使用宽带半导体可饱和吸收片,实现了锁模自启动的飞秒Cr^4+:YAG激光输出.在9W平均功率的1030nm激光抽运下,获得输出脉冲功率为95mW,光谱半高全宽45nm,中心波长1508nm,实测脉冲宽度为65fs.
A self-starting mode-locked Cr^4+: YAG laser is reported, which incorporates a broadband SESAM and uses a piece of GTI mirror to compensate the intra-cavity group-delay dispersion. 65-fs pulses are generated at an average power of 95 mW with a 45 nm spectral bandwidth centered at 1508 nm under the pump power of 9 W.