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2004 | 2 | 2 | 266-276
Tytuł artykułu

Phase- and helicity-dependent effects in three-color ionization

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
We study the two-photon ionization of the hydrogen atom from its ground state by a three-color electromagnetic field consisting of a superposition of an IR laser and two of its consecutive odd harmonics of order 2p−1 and 2p+1, withp a positive integer and constant relative phase difference. The ionization process due to the net absorption of the energy 2pħω (ω being the IR laser frequency) is considered. The influence of phase difference and helicity on the azimuthal angular distribution of the ejected photoelectrons is illustrated in the case in which the two harmonics have identical polarizations. Phase effect on the alignment of the differential ionization rate is also investigated.
Wydawca

Czasopismo
Rocznik
Tom
2
Numer
2
Strony
266-276
Opis fizyczny
Daty
wydano
2004-06-01
online
2004-06-01
Twórcy
  • Department of Chemistry, University of Bucharest, Bd. Regina Elisabeta 4-12, R-70346, Bucharest, Romania
autor
Bibliografia
  • [1] Y.-Y. Yin, C. Chen and D.S. Elliott: “Asymmetric photoelectron angular distributions from interfering photoionization processes”, Phys.Rev. Lett., Vol. 69, (1992), pp. 2353–2356. http://dx.doi.org/10.1103/PhysRevLett.69.2353[Crossref]
  • [2] D.W. Schumacher and P.H. Bucksbaum: “Phase dependence of intense field ionization”, Phys. Rev. A, Vol. 54, (1996), pp. 4271–4278. http://dx.doi.org/10.1103/PhysRevA.54.4271[Crossref]
  • [3] E. Papastathopoulos, D. Xenakis and D. Charalambidis: “Phase-sensitive ionization through multiphoton-excitation schemes involving even numbers of photons”, Phys. Rev. A., Vol. 59, (1990), pp. 4840–4842. http://dx.doi.org/10.1103/PhysRevA.59.4840[Crossref]
  • [4] T. Nakajima: “Possibility of direct determination of the quantum phase of continua utilizing the phase of lasers”, Phys. Rev. A, Vol. 61, (2000), pp. 041403(R) 1–4. http://dx.doi.org/10.1103/PhysRevA.61.041403
  • [5] S. Watanabe, K. Kondo, Y. Nabekawa, A. Sagisaka and Y. Kobayaski: “Two-color phase control in tunneling ionization and harmonic generation by a strong laser field and its third harmonic”, Phys. Rev. Lett., Vol. 73, (1994), pp. 2692–2695. http://dx.doi.org/10.1103/PhysRevLett.73.2692[Crossref]
  • [6] R.M. Potvliege and P.H.G. Smith: “Two-colour multiphoton ionization of hydrogen by an intense laser field and one of its harmonics”, J. Phys. B: At. Mol. Opt. Phys., Vol. 25, (1992), pp. 2501–2516. http://dx.doi.org/10.1088/0953-4075/25/11/007[Crossref]
  • [7] J.Z. Kaminski and F. Ehlotzky: “Phase-dependent sidelobes in high-order above-threshold ionization in a bichromatic laser field”, J. Phys. B: At. Mol. Opt. Phys., Vol. 30, (1997), pp. 5729–5735. http://dx.doi.org/10.1088/0953-4075/30/24/012[Crossref]
  • [8] M. Protopapas, P.L. Knight and K. Burnett: “Phase dependence in two-color excitation of a model atom by intense fields”, Phys. Rev. A, Vol. 49, (1994), pp. 1945–1949. http://dx.doi.org/10.1103/PhysRevA.49.1945[Crossref]
  • [9] R.A. Blank and M. Shapiro: “Phase and intensity control of integral and differential above-threshold ionization rates”, Phys. Rev. A, Vol. 52, (1995), pp. 4278–4281. http://dx.doi.org/10.1103/PhysRevA.52.4278[Crossref]
  • [10] V. Véniard, R. Taieb and A. Maquet: “Two-color multiphoton ionization of atoms using high-order harmonic radiation”, Phys. Rev. Lett., Vol. 74, (1995), pp. 4161–4164. http://dx.doi.org/10.1103/PhysRevLett.74.4161[Crossref]
  • [11] V. Véniard, R. Taieb and A. Maquet: “Phase dependence of (N+1)-color (N>1) ir-uv photoionization of atoms with higher harmonics”, Phys. Rev. A., Vol. 54, (1996), pp. 721–728. http://dx.doi.org/10.1103/PhysRevA.54.721[Crossref]
  • [12] M. Fifirig, V. Florescu, A. Maquet and R. Taieb: “Phase dependence of three-colour two-photon ionization of hydrogen”, J. Phys. B: At. Mol. Opt. Phys., Vol. 33, (2000), pp. 5313–5327. http://dx.doi.org/10.1088/0953-4075/33/23/305[Crossref]
  • [13] M. Gavrila: “Compton scattering by K-shell electrons. II. Nonrelativistic dipole approximation”, Phys. Rev. A, Vol. 6, (1972), pp. 1360–1367. http://dx.doi.org/10.1103/PhysRevA.6.1360[Crossref]
Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.-psjd-doi-10_2478_BF02475632
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