title: Enhanced harmonic emission from a polar molecule medium driven by few-cycle laser pulses.
abstract: We investigate theoretically the enhancement of the low-order harmonic emission from a polar molecular medium. The results show that, by using a control laser field, the intensity of the spectral signals near fourth-order harmonics will increase over 25 times as a result of the four-wave mixing process. Moreover, the enhancement effects depend strongly on the carrier-envelope phase of the initial laser fields, which cannot be found in a symmetric system.
authors.affiliation: School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou 221116, China. chaojinzhang@163.com
authors.forename: Chaojin
authors.initials: C
authors.lastname: Zhang
authors.forename: Jinping
authors.initials: J
authors.lastname: Yao
authors.forename: Jielei
authors.initials: J
authors.lastname: Ni
authors.forename: Fadhil A
authors.initials: FA
authors.lastname: Umran
mesh_terms: D003198:Computer Simulation; D006801:Humans; D007834:Lasers; D008027:Light; D008962:Models, Theoretical; D011789:Quantum Theory; D012666:Semiconductors; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*; D013057:Spectrum Analysis / Q000379:methods*