A new method of phase determination is presented to measure the frequency and intensity temporal profiles of attosecond XUV pulses directly, simultaneously and completely.

• 介绍阿秒超紫外线(XUV)激发惰性气体原子产生光电子并在强激光电场中运动的半经典近似方法；以及同时、直接、全面地测量阿秒XUV脉冲频率和强度时间分布的光电子能谱相位确定法.