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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.
в: Physical Review A, Том 97, № 4, 043419, 18.04.2018.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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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