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) The harmonic spectra in an inhomogeneous field ( ε = 0.0048 a.u.) with the different relative phases. (b) Temporal profiles of the generated isolated as pulses synthesized by the continua shown in panel (a). The cases of φ = 0 (solid black curve), φ = 0.05 π (dashed red curve), φ = −0.1 π (dotted green curve), and φ = −0.15 π (dashed–dotted blue curve), respectively. o.c. denotes the optical cycle.