title: Observation of interference between four-wave mixing and six-wave mixing.
abstract: We report generation of four-wave mixing enhanced by electromagnetically induced transparency and optical pumping in a ladder-type atomic system. When two pumping laser beams are used to form a conjugate small-angle static grating, both four-wave and six-wave mixing processes are shown to exist at the same time. Interference between these two nonlinear wave-mixing signals is experimentally demonstrated.
authors.affiliation: Department of Physics, University of Arkansas, Arkansas 72701, USA. ypzhang@mail.xjtu.edu.cn
authors.forename: Yanpeng
authors.initials: Y
authors.lastname: Zhang
authors.forename: Andy W
authors.initials: AW
authors.lastname: Brown
authors.forename: Min
authors.initials: M
authors.lastname: Xiao