title: Theoretical scheme for simultaneously observing forward-backward photoelectron holography.
abstract: Photoelectron angular momentum distribution of He+driven by a few-cycle laser is investigated numerically. We simultaneously observe two dominant interference patterns with one shot of lasers by solving the 3D time-dependent Schrodinger equation. Analysis of a semiclassical model identifies these two interference patterns as two types of photoelectron holography. The interference pattern with Pz>0 is a type of forward rescattering holography, which comes from the interference between direct (reference) and rescattered (signal) forward electrons ionized in the same quarter-cycle. The interference pattern with Pz<0 is a type of backward rescattering holography, which comes from the interference between a direct electron ionized in the third quarter-cycle and rescattered backward electron ionized in the first quarter-cycle. Moreover, we propose a method to distinguish this backward rescattering holography and intracycle interference patterns of direct electrons.
authors.forename: Hongchuan
authors.initials: H
authors.lastname: Du
authors.forename: Hongmei
authors.initials: H
authors.lastname: Wu
authors.forename: Huiqiao
authors.initials: H
authors.lastname: Wang
authors.forename: Shengjun
authors.initials: S
authors.lastname: Yue
authors.forename: Bitao
authors.initials: B
authors.lastname: Hu