Two-center interference in high-harmonic generation of <inline-formula> <img src="cpb_26_1_013202_ieqn1.gif"/> </inline-formula> in a combination of a mid-infrared laser field and a terahertz field

Two-center interference in high-harmonic generation of

in a combination of a mid-infrared laser field and a terahertz field

Zhang Jun, Pan Xue-Fei, Xu Tong-Tong, Zhang Hong-Dan, Du Hui, Guo Jing, Liu Xue-Shen^†

(color online)Electric field (black dashed curve) and ionization probability (blue solid curve) in (a1) a mid-infrared laser pulse and (b1) the combined laser pulse. Electron probability density distribution in (a2) a mid-infrared laser pulse and (b2) the combined laser pulse. High-order harmonic spectra of in (a3) a mid-infrared laser pulse and (b3) the combined laser pulse.