Fachbereich Physik, Philipps-Universität Marburg, D-35032 Marburg, Germany.
Phys Rev Lett. 2011 Jul 15;107(3):033903. doi: 10.1103/PhysRevLett.107.033903. Epub 2011 Jul 12.
We investigate macroscopic interference effects in high-order harmonic generation using a Ti:sapphire laser operating at a 100 kHz repetition rate. The structure and behavior of spectral and spatial interference fringes are explained and analytically described by transient phase matching of the long electron trajectory contribution. Time-frequency mapping due to the temporal chirp of the harmonic emission allows us to observe Maker fringes directly in the spectral domain.
我们使用重复频率为 100 kHz 的钛宝石激光器研究了高阶谐波产生中的宏观干涉效应。通过长电子轨迹贡献的瞬态相位匹配，解释和分析了光谱和空间干涉条纹的结构和行为。由于谐波发射的时间啁啾，时频映射允许我们在光谱域中直接观察到马克尔条纹。
