Selection of quantum path in high-order harmonics and isolated sub-100 attosecond generation in few-cycle spatially inhomogeneous laser fields*
Ge Xin-Lei, Du Hui, Wang Qun, Guo Jing†, Liu Xue-Shen‡
       
Harmonic spectrum of molecule in a 3-fs, 800-nm laser pulse with the peak intensity I = 4×1014 W/cm2. The solid black curve: ε = 0 (homogeneous case). The dashed red curve: ε = 0.003. The dotted green curve: ε = 0.0048.