Jiang Jiaming, Wei Pengfei, Zeng Zhinan, Miao Jing, Zheng Yinghui, Ge Xiaochun, Li Chuang, Li Ruxin, Xu Zhizhan
Opt Express. 2014 Jun 30;22(13):15975-81. doi: 10.1364/OE.22.015975.
We experimentally demonstrate the macroscopic evolution of quantum-path distributions in harmonic emission with spatial and spectral resolution from an argon gas jet, and obviously observe that the spatial profiles of harmonics are gradually split into two components (the red and blue shifts) when the driving laser intensity is increased. Moreover, the red and blue shifts in quantum-path distributions are experimentally traced and clarified in the spatial and spectral domain by choosing the focal position. These results give a more comprehensive understanding and therefore a better control of harmonic emission.
我们通过实验证明了氩气射流谐波发射中量子路径分布的宏观演化，并具有空间和光谱分辨率，并且明显观察到当驱动激光强度增加时，谐波的空间分布逐渐分裂为两个分量（红移和蓝移）。此外，通过选择焦点位置，在空间和光谱域中对量子路径分布中的红移和蓝移进行了实验追踪和阐明。这些结果提供了更全面的理解，从而更好地控制谐波发射。
