Selection of quantum path in high-order harmonics and isolated sub-100 attosecond generation in few-cycle spatially inhomogeneous laser fields<xref ref-type="fn" rid="cpb141972fn1">*</xref>

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‡

(a) Dependence of the semiclassical trajectories on the ionization ( t _i) and emission ( t _r) times for ε = 0 a.u. (green triangles), ε = 0.003 a.u. (blue squares), and ε = 0.0048 a.u. (red circles). (b) A detailed view of ionization time from −0.5 o.c. to 0.1 o.c. o.c. denotes the optical cycle.