Helicity-selective phase-matching and quasi-phase matching of circularly polarized high-order harmonics: Towards chiral attosecond pulses

Ofer Kfir; Patrik Grychtol; Emrah Turgut; Ronny Knut; Dmitriy Zusin; Avner Fleischer; Eliyahu Bordo; Tingting Fan; Dimitar Popmintchev; Tenio Popmintchev; Henry Kapteyn; Margaret Murnane; Oren Cohen

doi:10.1088/0953-4075/49/12/123501

Helicity-selective phase-matching and quasi-phase matching of circularly polarized high-order harmonics: Towards chiral attosecond pulses

Ofer Kfir, Patrik Grychtol, Emrah Turgut, Ronny Knut, Dmitriy Zusin, Avner Fleischer, Eliyahu Bordo, Tingting Fan, Dimitar Popmintchev, Tenio Popmintchev, Henry Kapteyn, Margaret Murnane, Oren Cohen

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

41 Scopus citations

Abstract

Phase matching of circularly polarized high-order harmonics driven by counter-rotating bi-chromatic lasers was recently predicted theoretically and demonstrated experimentally. In that work, phase matching was analyzed by assuming that the total energy, spin angular momentum and linear momentum of the photons participating in the process are conserved. Here we propose a new perspective on phase matching of circularly polarized high harmonics. We derive an extended phase matching condition by requiring a new propagation matching condition between the classical vectorial bi-chromatic laser pump and harmonics fields. This allows us to include the influence of the laser pulse envelopes on phase matching. We find that the helicity dependent phase matching facilitates generation of high harmonics beams with a high degree of chirality. Indeed, we present an experimentally measured chiral spectrum that can support a train of attosecond pulses with a high degree of circular polarization. Moreover, while the degree of circularity of the most intense pulse approaches unity, all other pulses exhibit reduced circularity. This feature suggests the possibility of using a train of attosecond pulses as an isolated attosecond probe for chiral-sensitive experiments.

Original language	English
Article number	123501
Journal	Journal of Physics B: Atomic, Molecular and Optical Physics
Volume	49
Issue number	12
DOIs	https://doi.org/10.1088/0953-4075/49/12/123501
State	Published - 23 May 2016
Externally published	Yes

Keywords

attosecond pulses
circularly polarized high harmonic generation
phase matching
ultrafast chiral physics

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10.1088/0953-4075/49/12/123501

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Kfir, O., Grychtol, P., Turgut, E., Knut, R., Zusin, D., Fleischer, A., Bordo, E., Fan, T., Popmintchev, D., Popmintchev, T., Kapteyn, H., Murnane, M., & Cohen, O. (2016). Helicity-selective phase-matching and quasi-phase matching of circularly polarized high-order harmonics: Towards chiral attosecond pulses. Journal of Physics B: Atomic, Molecular and Optical Physics, 49(12), Article 123501. https://doi.org/10.1088/0953-4075/49/12/123501

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title = "Helicity-selective phase-matching and quasi-phase matching of circularly polarized high-order harmonics: Towards chiral attosecond pulses",

abstract = "Phase matching of circularly polarized high-order harmonics driven by counter-rotating bi-chromatic lasers was recently predicted theoretically and demonstrated experimentally. In that work, phase matching was analyzed by assuming that the total energy, spin angular momentum and linear momentum of the photons participating in the process are conserved. Here we propose a new perspective on phase matching of circularly polarized high harmonics. We derive an extended phase matching condition by requiring a new propagation matching condition between the classical vectorial bi-chromatic laser pump and harmonics fields. This allows us to include the influence of the laser pulse envelopes on phase matching. We find that the helicity dependent phase matching facilitates generation of high harmonics beams with a high degree of chirality. Indeed, we present an experimentally measured chiral spectrum that can support a train of attosecond pulses with a high degree of circular polarization. Moreover, while the degree of circularity of the most intense pulse approaches unity, all other pulses exhibit reduced circularity. This feature suggests the possibility of using a train of attosecond pulses as an isolated attosecond probe for chiral-sensitive experiments.",

keywords = "attosecond pulses, circularly polarized high harmonic generation, phase matching, ultrafast chiral physics",

author = "Ofer Kfir and Patrik Grychtol and Emrah Turgut and Ronny Knut and Dmitriy Zusin and Avner Fleischer and Eliyahu Bordo and Tingting Fan and Dimitar Popmintchev and Tenio Popmintchev and Henry Kapteyn and Margaret Murnane and Oren Cohen",

note = "Publisher Copyright: {\textcopyright} 2016 IOP Publishing Ltd.",

year = "2016",

month = may,

day = "23",

doi = "10.1088/0953-4075/49/12/123501",

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Kfir, O, Grychtol, P, Turgut, E, Knut, R, Zusin, D, Fleischer, A, Bordo, E, Fan, T, Popmintchev, D, Popmintchev, T, Kapteyn, H, Murnane, M & Cohen, O 2016, 'Helicity-selective phase-matching and quasi-phase matching of circularly polarized high-order harmonics: Towards chiral attosecond pulses', Journal of Physics B: Atomic, Molecular and Optical Physics, vol. 49, no. 12, 123501. https://doi.org/10.1088/0953-4075/49/12/123501

TY - JOUR

T1 - Helicity-selective phase-matching and quasi-phase matching of circularly polarized high-order harmonics

T2 - Towards chiral attosecond pulses

AU - Kfir, Ofer

AU - Grychtol, Patrik

AU - Turgut, Emrah

AU - Knut, Ronny

AU - Zusin, Dmitriy

AU - Fleischer, Avner

AU - Bordo, Eliyahu

AU - Fan, Tingting

AU - Popmintchev, Dimitar

AU - Popmintchev, Tenio

AU - Kapteyn, Henry

AU - Murnane, Margaret

AU - Cohen, Oren

PY - 2016/5/23

Y1 - 2016/5/23

N2 - Phase matching of circularly polarized high-order harmonics driven by counter-rotating bi-chromatic lasers was recently predicted theoretically and demonstrated experimentally. In that work, phase matching was analyzed by assuming that the total energy, spin angular momentum and linear momentum of the photons participating in the process are conserved. Here we propose a new perspective on phase matching of circularly polarized high harmonics. We derive an extended phase matching condition by requiring a new propagation matching condition between the classical vectorial bi-chromatic laser pump and harmonics fields. This allows us to include the influence of the laser pulse envelopes on phase matching. We find that the helicity dependent phase matching facilitates generation of high harmonics beams with a high degree of chirality. Indeed, we present an experimentally measured chiral spectrum that can support a train of attosecond pulses with a high degree of circular polarization. Moreover, while the degree of circularity of the most intense pulse approaches unity, all other pulses exhibit reduced circularity. This feature suggests the possibility of using a train of attosecond pulses as an isolated attosecond probe for chiral-sensitive experiments.

AB - Phase matching of circularly polarized high-order harmonics driven by counter-rotating bi-chromatic lasers was recently predicted theoretically and demonstrated experimentally. In that work, phase matching was analyzed by assuming that the total energy, spin angular momentum and linear momentum of the photons participating in the process are conserved. Here we propose a new perspective on phase matching of circularly polarized high harmonics. We derive an extended phase matching condition by requiring a new propagation matching condition between the classical vectorial bi-chromatic laser pump and harmonics fields. This allows us to include the influence of the laser pulse envelopes on phase matching. We find that the helicity dependent phase matching facilitates generation of high harmonics beams with a high degree of chirality. Indeed, we present an experimentally measured chiral spectrum that can support a train of attosecond pulses with a high degree of circular polarization. Moreover, while the degree of circularity of the most intense pulse approaches unity, all other pulses exhibit reduced circularity. This feature suggests the possibility of using a train of attosecond pulses as an isolated attosecond probe for chiral-sensitive experiments.

KW - attosecond pulses

KW - circularly polarized high harmonic generation

KW - phase matching

KW - ultrafast chiral physics

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DO - 10.1088/0953-4075/49/12/123501

M3 - 文章

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SN - 0953-4075

VL - 49

JO - Journal of Physics B: Atomic, Molecular and Optical Physics

JF - Journal of Physics B: Atomic, Molecular and Optical Physics

IS - 12

M1 - 123501

ER -

Helicity-selective phase-matching and quasi-phase matching of circularly polarized high-order harmonics: Towards chiral attosecond pulses

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