Analytic description of high-order harmonic generation by atoms in a two-color laser field

Frolov, M. V.; Manakov, N. L.; Silaev, A. A.; Vvedenskii, N. V.

doi:10.1103/physreva.81.063407

Cited by 44 publications

(58 citation statements)

References 82 publications

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“…The temporal integrals (involving the Green function for a free electron in a short laser pulse) in these amplitudes can be estimated using a modified saddle-point analysis, as done similarly in Refs. [15,20]. As a result, the amplitudes A j depend on the ionization (t …”

Section: F(t) =ẑF (T) =ẑF (T) Cos(ωtmentioning

confidence: 99%

“…Note that the first term in E (j ) max is the aforementioned classical energy E (j ) cl , while the second term gives the quantum correction to E (j ) cl [15]. In Fig.…”

Section: F(t) =ẑF (T) =ẑF (T) Cos(ωtmentioning

confidence: 99%

“…This parametrization is attractive since (i) it is valid for harmonics with energies in the region of the HHG plateau cutoff, which are precisely the ones used to produce attosecond pulses, and (ii) it involves a field-free atomic parameter σ (r) that describes atomic structure effects on HHG spectra [12][13][14][15][16]. However, the explicit form of the EWP is known only for monochromatic [12] and two-color [15] fields, while the possible manifestation of atomic structure features in the few-cycle regime and their modification by CEP effects remain unexplored.…”

Section: F(t) =ẑF (T) =ẑF (T) Cos(ωtmentioning

confidence: 99%

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High-order harmonic generation by atoms in a few-cycle laser pulse: Carrier-envelope phase and many-electron effects

et al. 2011

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Section: F(t) =ẑF (T) =ẑF (T) Cos(ωtmentioning

confidence: 99%

“…Note that the first term in E (j ) max is the aforementioned classical energy E (j ) cl , while the second term gives the quantum correction to E (j ) cl [15]. In Fig.…”

Section: F(t) =ẑF (T) =ẑF (T) Cos(ωtmentioning

confidence: 99%

Section: F(t) =ẑF (T) =ẑF (T) Cos(ωtmentioning

confidence: 99%

See 1 more Smart Citation

High-order harmonic generation by atoms in a few-cycle laser pulse: Carrier-envelope phase and many-electron effects

et al. 2011

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“…This approach for describing HHG by a linearly polarized field has been presented in detail in [21] (for a monochromatic field) and [10] (for a two-colour field with parallel linear polarizations) and was generalized to the case of elliptic polarization in [16]. We extend it here to the case of a two-colour field with orthogonal polarizations, whose electric vector is…”

mentioning

confidence: 99%

“…For a linearly polarized field, this factorization was proposed phenomenologically, based on numerical solutions of the time-dependent Schrödinger equation [3,4]. It has now been justified theoretically for a monochromatic field [5,6], for a short laser pulse [7][8][9], and for a two-colour field with collinearly polarized components [10].…”

mentioning

confidence: 99%

Harmonic generation spectroscopy with a two-colour laser field having orthogonal linear polarizations

Sarantseva

Frolov

Manakov

et al. 2013

J. Phys. B: At. Mol. Opt. Phys.

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Response of an atom interacting with an arbitrarily polarized electromagnetic field

Андреев

Stremoukhov

Shutova³

2011

Radiophys Quantum El

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We develop the theory of interaction of the electromagnetic field and a single atom being in an arbitrary state and having an arbitrary direction of the angular momentum of the atomic electron with respect to the direction of the field polarization vector. It is shown that the atom response current has a tensor structure and depends on both the direction of the angular momentum of the atom, and the polarization vector of the external field. The tensor character of the response is determined by the externally induced anisotropic distribution of the probability density of spatial localization of the atomic electron. It is shown that the induced-anisotropy effects clarify the harmonic generation mechanism at play during the non-resonance interaction of laser radiation with atomic media. The developed theory is applied to the analysis of the problem about the generation of terahertz waves in a two-color laser field. It is shown that the change in the mutual orientation of wave polarization vectors leads to a significant increase in the efficiency of conversion of high-frequency fields to low-frequency ones. It is shown for the first time that the generation of terahertz waves is possible in the preionization regime, when the generation mechanism is related to atomic nonlinearity.

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Analytic description of high-order harmonic generation by atoms in a two-color laser field

Cited by 44 publications

References 82 publications

High-order harmonic generation by atoms in a few-cycle laser pulse: Carrier-envelope phase and many-electron effects

High-order harmonic generation by atoms in a few-cycle laser pulse: Carrier-envelope phase and many-electron effects

Harmonic generation spectroscopy with a two-colour laser field having orthogonal linear polarizations

Response of an atom interacting with an arbitrarily polarized electromagnetic field

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