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Coherent phase control in ionization of magnesium by a bichromatic laser field of frequencies \(\mathsf\omega \) and 2 \(\mathsf\omega \)

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Abstract.

We have investigated the coherent phase control on the 3p 2 autoionizing state (AIS) resonantly coupled with the ground state for Mg through a two- and a four-photon transition simultaneously, using a bichromatic linearly polarized laser field. The frequency is chosen such that the lasers are tunable around resonance with the transition \(3s^{2}(^{1}{\rm S^e})\rightarrow 3p^{2}(^{1}{\rm S^e}) \), which implies \(\omega_{f} = 2.11 \) eV and \(\omega_{h} = 4.22 \) eV. We are interested in the modification of autoionizing (AI) line shape through the relative phase and laser intensities. A strong phase dependence on the total ionization yield and ionization rate is found. We also performed a time-dependent calculation which takes into consideration all the resonant states of the process.

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Authors and Affiliations

  1. Institute of Electronic Structure and Laser, FORTH, P.O. Box 1527, 71110, Heraklion-Crete, Greece

    G. Buică-Zloh & L. A. A. Nikolopoulos

  2. Dept. of Telecommunications Science, Univ. of Peloponnese, 221 00, Tripolis, Greece

    L. A. A. Nikolopoulos

Authors
  1. G. Buică-Zloh
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  2. L. A. A. Nikolopoulos
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Corresponding author

Correspondence to G. Buică-Zloh.

Additional information

Received: 5 November 2003, Published online: 9 March 2004

PACS:

32.80.Qk Coherent control of atomic interactions with photons - 32.80.Rm Multiphoton ionization and excitation to highly excited states (e.g., Rydberg states) - 32.80.Dz Autoionization

G. Buică-Zloh: Permanent address: Institute for Space Sciences, P.O. Box MG-23, 77125 Bucharest-Măgurele, Romania.

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Buică-Zloh, G., Nikolopoulos, L.A.A. Coherent phase control in ionization of magnesium by a bichromatic laser field of frequencies \(\mathsf\omega \) and 2 \(\mathsf\omega \) . Eur. Phys. J. D 29, 201–208 (2004). https://doi.org/10.1140/epjd/e2004-00034-2

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  • DOI: https://doi.org/10.1140/epjd/e2004-00034-2

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