用SPIDER法测量超宽带钛宝石振荡器的激光脉宽研究

Pulse width measurement of ultra-broad-bandwidth Ti:sapphire oscillator using SPIDER technique

用SPIDER方法测量了超宽带钛宝石振荡器输出激光的脉宽,得到7·86fs的测量结果,这是目前国内所报道的仅用啁啾镜补偿色散、直接从振荡器输出的最短激光脉冲.简要介绍了振荡器的基本结构和SPIDER方法测量装置,并对计算得到的光谱相位进行了讨论和分析.

The pulse width generated by an ultra-broad-bandwidth Ti： sapphire oscillator is measured using SPIDER technique. The measurement result is 7.86 fs, which is, as presently reported in China, the shortest pulse output directly from an oscillator in which only chirped mirrors was used to compensate for the laser dispersion. Layout of the oscillator and the SPIDER setup are introduced in details, and the spectral phase of the laser pulse obtained through calculation is discussed.