title: High conversion efficiency in resonant four-wave mixing processes.
abstract: We propose a new scheme of the resonant four-wave mixing (FWM) for the frequency up or down conversion, which is more efficient than the commonly-used scheme of the non-resonant FWM. In this new scheme, two control fields are spatially varied such that a probe field at the input can be converted to a signal field at the output. The efficiency of probe-to-signal energy conversion can be 90% at medium's optical depth of about 100. Our proposed scheme works for both the continuous-wave and pulse cases, and is flexible in choosing the control field intensity. This work provides a very useful tool in the nonlinear frequency conversion.
authors.forename: Chin-Yuan
authors.initials: CY
authors.lastname: Lee
authors.forename: Bo-Han
authors.initials: BH
authors.lastname: Wu
authors.forename: Gang
authors.initials: G
authors.lastname: Wang
authors.forename: Yong-Fang
authors.initials: YF
authors.lastname: Chen
authors.forename: Ying-Cheng
authors.initials: YC
authors.lastname: Chen
authors.forename: Ite A
authors.initials: IA
authors.lastname: Yu