Open AccessEnhanced harmonic emission from a polar molecule medium driven by few-cycle laser pulses
Author(s) -
Chaojin Zhang,
Jinping Yao,
Jielei Ni,
Fadhil A. Umran
Publication year - 2012
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.20.026521
Subject(s) - harmonics , optics , laser , high harmonic generation , harmonic , physics , polar , phase (matter) , mixing (physics) , materials science , quantum mechanics , voltage , astronomy
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.