Sorokina I T, Sorokin E, Wintner E, Cassanho A, Jenssen H P, Szipöcs R
Abteilung Quantenelektronik und Lasertechnik, Technishe Universität Wien, Gusshaustrasse 27/359, A-1040 Vienna, Austria.
Opt Lett. 1997 Nov 15;22(22):1716-8. doi: 10.1364/ol.22.001716.
Kerr-lens mode-locked Kr-laser-pumped Cr:LiSGaF and Cr:LiSAF lasers containing only two newly developed low-loss chirped mirrors instead of conventional dielectric resonator mirrors and generating pulses of widths as small as 14-fs with as much as 100 mW of average output power are reported. We report what is to our knowledge the first experimental observation of a pulse self-frequency shift in crystalline active media that are characteristic of such short pulses at megawatt intracavity peak powers. We also believe this phenomenon to be one of the significant limiting factors for pulse duration in femtosecond Cr:LiSAF-type lasers.
报道了克尔透镜锁模的氪离子激光泵浦的Cr:LiSGaF和Cr:LiSAF激光器，该激光器仅包含两个新开发的低损耗啁啾镜，而非传统的介质谐振腔镜，能产生宽度低至14飞秒的脉冲，平均输出功率高达100毫瓦。据我们所知，我们报道了在晶体有源介质中脉冲自频移的首次实验观测，这种自频移是兆瓦级腔内峰值功率下此类短脉冲的特征。我们还认为这种现象是飞秒Cr:LiSAF型激光器中脉冲持续时间的重要限制因素之一。
