Generation of high-order harmonics with controllable elliptical polarization

TY - JOUR

T1 - Generation of high-order harmonics with controllable elliptical polarization

AU - Fleischer, Avner

AU - Sidorenko, Pavel

AU - Cohen, Oren

PY - 2013/1/15

Y1 - 2013/1/15

N2 - We propose and numerically demonstrate a method for obtaining high-harmonic radiation with desirable elliptical polarization. Atoms are shined by a combination of a strong linearly-polarized laser field and an additional weak field, which is elliptically polarized in a plane perpendicular to the polarization direction of the strong field. The strong driver ionizes and recollides electrons with their parent ion, while the weak field perturbatively drives the electrons away from "head-on" collision. Upon recombination, new elliptically polarized harmonics with same ellipticity as the weak driver are emitted at efficiency which linearly depends on the intensity of the weak beam, but is independent of its elilipticity.

AB - We propose and numerically demonstrate a method for obtaining high-harmonic radiation with desirable elliptical polarization. Atoms are shined by a combination of a strong linearly-polarized laser field and an additional weak field, which is elliptically polarized in a plane perpendicular to the polarization direction of the strong field. The strong driver ionizes and recollides electrons with their parent ion, while the weak field perturbatively drives the electrons away from "head-on" collision. Upon recombination, new elliptically polarized harmonics with same ellipticity as the weak driver are emitted at efficiency which linearly depends on the intensity of the weak beam, but is independent of its elilipticity.

UR - http://www.scopus.com/inward/record.url?scp=84872548186&partnerID=8YFLogxK

U2 - 10.1364/OL.38.000223

DO - 10.1364/OL.38.000223

M3 - 文章

AN - SCOPUS:84872548186

SN - 0146-9592

VL - 38

SP - 223

EP - 225

JO - Optics Letters

JF - Optics Letters

IS - 2

ER -