### Abstract

For the case where the Rabi frequencies of the guiding fields are much larger than the relaxation constants but much smaller than the Doppler broadening, it is shown that resonances which are neither field nor Doppler broadened can appear in the absorption (or gain) spectrum of the probe field. A classification of fourlevel systems according to the number of resonances is made for cases where two strong fields interact either with opposite or adjoining transitions. The conditions under which the number of resonances reaches eight, while for stationary atoms the maximum number is four, are found. A method is proposed for calculating the number of resonances in a multilevel system with several strong fields using analysis of the extremum points of the frequency branches in the velocity-frequency plane.

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

Pages (from-to) | 287-297 |

Number of pages | 11 |

Journal | Journal of Experimental and Theoretical Physics |

Volume | 91 |

Issue number | 2 |

State | Published - 2000 |

Externally published | Yes |

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### ASJC Scopus subject areas

- Physics and Astronomy(all)

### Cite this

*Journal of Experimental and Theoretical Physics*,

*91*(2), 287-297.

**Nonlinear Resonances Free of Field and Doppler Broadenings.** / Belousov, Yu I.; Podivilov, E. V.; Stepanov, Mikhail; Shapiro, D. A.

Research output: Contribution to journal › Article

*Journal of Experimental and Theoretical Physics*, vol. 91, no. 2, pp. 287-297.

}

TY - JOUR

T1 - Nonlinear Resonances Free of Field and Doppler Broadenings

AU - Belousov, Yu I.

AU - Podivilov, E. V.

AU - Stepanov, Mikhail

AU - Shapiro, D. A.

PY - 2000

Y1 - 2000

N2 - For the case where the Rabi frequencies of the guiding fields are much larger than the relaxation constants but much smaller than the Doppler broadening, it is shown that resonances which are neither field nor Doppler broadened can appear in the absorption (or gain) spectrum of the probe field. A classification of fourlevel systems according to the number of resonances is made for cases where two strong fields interact either with opposite or adjoining transitions. The conditions under which the number of resonances reaches eight, while for stationary atoms the maximum number is four, are found. A method is proposed for calculating the number of resonances in a multilevel system with several strong fields using analysis of the extremum points of the frequency branches in the velocity-frequency plane.

AB - For the case where the Rabi frequencies of the guiding fields are much larger than the relaxation constants but much smaller than the Doppler broadening, it is shown that resonances which are neither field nor Doppler broadened can appear in the absorption (or gain) spectrum of the probe field. A classification of fourlevel systems according to the number of resonances is made for cases where two strong fields interact either with opposite or adjoining transitions. The conditions under which the number of resonances reaches eight, while for stationary atoms the maximum number is four, are found. A method is proposed for calculating the number of resonances in a multilevel system with several strong fields using analysis of the extremum points of the frequency branches in the velocity-frequency plane.

UR - http://www.scopus.com/inward/record.url?scp=31344450967&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=31344450967&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:31344450967

VL - 91

SP - 287

EP - 297

JO - Journal of Experimental and Theoretical Physics

JF - Journal of Experimental and Theoretical Physics

SN - 1063-7761

IS - 2

ER -