### Abstract

A previously developed exact semiclassical method is used to evaluate multi-photon spectra and Floquet characteristic exponents (dressed-atom energies) for several multi-level systems interacting with both strong oscillating and static fields under varying degrees of saturation. The usefulness of characteristic exponent plots in extracting the physically significant features of the spectrum, without the necessity of evaluating portions of the complete spectrum, is demonstrated for a number of model three-level systems which are not directly amenable to study by the often used rotating-wave approximation. The effect of neighbouring non-resonant states on two-photon resonance profiles is also discussed using three to six level systems (H and Na atoms) as models.

Original language | English (US) |
---|---|

Article number | 013 |

Pages (from-to) | 2641-2653 |

Number of pages | 13 |

Journal | Journal of Physics B: Atomic and Molecular Physics |

Volume | 11 |

Issue number | 15 |

DOIs | |

State | Published - 1978 |

Externally published | Yes |

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### ASJC Scopus subject areas

- Atomic and Molecular Physics, and Optics

### Cite this

**Non-linear resonance frequency shifts and saturation effects by oscillating and static applied fields in multi-level systems.** / Moloney, Jerome V; Meath, W. J.

Research output: Contribution to journal › Article

*Journal of Physics B: Atomic and Molecular Physics*, vol. 11, no. 15, 013, pp. 2641-2653. https://doi.org/10.1088/0022-3700/11/15/013

}

TY - JOUR

T1 - Non-linear resonance frequency shifts and saturation effects by oscillating and static applied fields in multi-level systems

AU - Moloney, Jerome V

AU - Meath, W. J.

PY - 1978

Y1 - 1978

N2 - A previously developed exact semiclassical method is used to evaluate multi-photon spectra and Floquet characteristic exponents (dressed-atom energies) for several multi-level systems interacting with both strong oscillating and static fields under varying degrees of saturation. The usefulness of characteristic exponent plots in extracting the physically significant features of the spectrum, without the necessity of evaluating portions of the complete spectrum, is demonstrated for a number of model three-level systems which are not directly amenable to study by the often used rotating-wave approximation. The effect of neighbouring non-resonant states on two-photon resonance profiles is also discussed using three to six level systems (H and Na atoms) as models.

AB - A previously developed exact semiclassical method is used to evaluate multi-photon spectra and Floquet characteristic exponents (dressed-atom energies) for several multi-level systems interacting with both strong oscillating and static fields under varying degrees of saturation. The usefulness of characteristic exponent plots in extracting the physically significant features of the spectrum, without the necessity of evaluating portions of the complete spectrum, is demonstrated for a number of model three-level systems which are not directly amenable to study by the often used rotating-wave approximation. The effect of neighbouring non-resonant states on two-photon resonance profiles is also discussed using three to six level systems (H and Na atoms) as models.

UR - http://www.scopus.com/inward/record.url?scp=36149038844&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=36149038844&partnerID=8YFLogxK

U2 - 10.1088/0022-3700/11/15/013

DO - 10.1088/0022-3700/11/15/013

M3 - Article

VL - 11

SP - 2641

EP - 2653

JO - Journal of the Physics B: Atomic and Molecular Physics

JF - Journal of the Physics B: Atomic and Molecular Physics

SN - 0022-3700

IS - 15

M1 - 013

ER -