Controlling electron quantum paths for generation of circularly polarized high-order harmonics by H2+ subject to tailored (ω, 2ω) counter-rotating laser fields

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Controlling electron quantum paths for generation of circularly polarized high-order harmonics by H2+ subject to tailored (ω, 2ω) counter-rotating laser fields. / Heslar, John; Telnov, Dmitry A.; Chu, Shih I.

In: Physical Review A, Vol. 97, No. 4, 043419, 18.04.2018.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{66d5fc11b65241558278524ba513efd1,

title = "Controlling electron quantum paths for generation of circularly polarized high-order harmonics by H2+ subject to tailored (ω, 2ω) counter-rotating laser fields",

abstract = "Recently, studies of high-order harmonics (HHG) from atoms driven by bichromatic counter-rotating circularly polarized laser fields as a source of coherent circularly polarized extreme ultraviolet (XUV) and soft-x-ray beams in a tabletop-scale setup have received considerable attention. Here, we demonstrate the ability to control the electron recollisions giving three returns per one cycle of the fundamental frequency ω by using tailored bichromatic (ω, 2ω) counter-rotating circularly polarized laser fields with a molecular target. The full control of the electronic pathway is first analyzed by a classical trajectory analysis and then extended to a detailed quantum study of H2+ molecules in bichromatic (ω, 2ω) counter-rotating circularly polarized laser fields. The radiation spectrum contains doublets of left- and right-circularly polarized harmonics in the XUV ranges. We study in detail the below-, near-, and above-threshold harmonic regions and describe how excited-state resonances alter the ellipticity and phase of the generated harmonic peaks.",

author = "John Heslar and Telnov, {Dmitry A.} and Chu, {Shih I.}",

year = "2018",

month = apr,

day = "18",

doi = "10.1103/PhysRevA.97.043419",

language = "English",

volume = "97",

journal = "Physical Review A - Atomic, Molecular, and Optical Physics",

issn = "1050-2947",

publisher = "American Physical Society",

number = "4",

}

RIS

TY - JOUR

T1 - Controlling electron quantum paths for generation of circularly polarized high-order harmonics by H2+ subject to tailored (ω, 2ω) counter-rotating laser fields

AU - Heslar, John

AU - Telnov, Dmitry A.

AU - Chu, Shih I.

PY - 2018/4/18

Y1 - 2018/4/18

N2 - Recently, studies of high-order harmonics (HHG) from atoms driven by bichromatic counter-rotating circularly polarized laser fields as a source of coherent circularly polarized extreme ultraviolet (XUV) and soft-x-ray beams in a tabletop-scale setup have received considerable attention. Here, we demonstrate the ability to control the electron recollisions giving three returns per one cycle of the fundamental frequency ω by using tailored bichromatic (ω, 2ω) counter-rotating circularly polarized laser fields with a molecular target. The full control of the electronic pathway is first analyzed by a classical trajectory analysis and then extended to a detailed quantum study of H2+ molecules in bichromatic (ω, 2ω) counter-rotating circularly polarized laser fields. The radiation spectrum contains doublets of left- and right-circularly polarized harmonics in the XUV ranges. We study in detail the below-, near-, and above-threshold harmonic regions and describe how excited-state resonances alter the ellipticity and phase of the generated harmonic peaks.

AB - Recently, studies of high-order harmonics (HHG) from atoms driven by bichromatic counter-rotating circularly polarized laser fields as a source of coherent circularly polarized extreme ultraviolet (XUV) and soft-x-ray beams in a tabletop-scale setup have received considerable attention. Here, we demonstrate the ability to control the electron recollisions giving three returns per one cycle of the fundamental frequency ω by using tailored bichromatic (ω, 2ω) counter-rotating circularly polarized laser fields with a molecular target. The full control of the electronic pathway is first analyzed by a classical trajectory analysis and then extended to a detailed quantum study of H2+ molecules in bichromatic (ω, 2ω) counter-rotating circularly polarized laser fields. The radiation spectrum contains doublets of left- and right-circularly polarized harmonics in the XUV ranges. We study in detail the below-, near-, and above-threshold harmonic regions and describe how excited-state resonances alter the ellipticity and phase of the generated harmonic peaks.

UR - http://www.scopus.com/inward/record.url?scp=85046531317&partnerID=8YFLogxK

UR - http://www.mendeley.com/research/controlling-electron-quantum-paths-generation-circularly-polarized-highorder-harmonics-h2-subject-ta

U2 - 10.1103/PhysRevA.97.043419

DO - 10.1103/PhysRevA.97.043419

M3 - Article

AN - SCOPUS:85046531317

VL - 97

JO - Physical Review A - Atomic, Molecular, and Optical Physics

JF - Physical Review A - Atomic, Molecular, and Optical Physics

SN - 1050-2947

IS - 4

M1 - 043419

ER -

ID: 28199914