Frequency dependence of quantum path interference in non-collinear high-order harmonic generation
Zhong Shi-Yang, He Xin-Kui†, , Teng Hao, Ye Peng, Wang Li-Feng, He Peng, Wei Zhi-Yi‡,
       

Schematic illustration of the simulation geometry. Two driving fields ω1 and ω2 enter the gas target with an angle θ. The polarization plane of the two parallelly polarized fields is determined by their wave vectors The propagation angle φ is determined by the direction of the momentum conservation. Dashed blue peak indicates the HHG in far-field x′ from different paths.