title: Enhancement of ultrafast four-wave mixing in a polar molecule medium.
abstract: We investigate the ultrafast four-wave mixing (FWM) with two-color few-cycle ultrashort pulses propagating in a two-level polar molecule medium. It is found that the enhancement of FWM can be achieved even for low intensity pulses due to the effects of permanent dipole moments (PDM) in polar molecules. Moreover, the conversion efficiency of FWM can be controlled by the carrier-envelope phases (CEP) of two ultrashort pulses.
authors.affiliation: State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China.
authors.forename: Weifeng
authors.initials: W
authors.lastname: Yang
authors.forename: Shangqing
authors.initials: S
authors.lastname: Gong
authors.forename: Zhizhan
authors.initials: Z
authors.lastname: Xu
mesh_terms: D003142:Communication; D003198:Computer Simulation; D008027:Light; D008962:Models, Theoretical; D011789:Quantum Theory; D012666:Semiconductors; D012815:Signal Processing, Computer-Assisted; D013057:Spectrum Analysis / Q000379:methods*