Ultra-narrow electromagnetically induced transparency and inversionless gain in a ladder-four-level system | Zendy

Li Yongfang | Zendy; Sun Jian-feng | Zendy

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Ultra-narrow electromagnetically induced transparency and inversionless gain in a ladder-four-level system

Author(s) -

Li Yongfang,

Sun Jian-feng

Publication year - 2003

Publication title -

acta physica sinica

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.199

H-Index - 47

ISSN - 1000-3290

DOI - 10.7498/aps.52.547

Subject(s) - electromagnetically induced transparency , physics , excitation , rabi frequency , realization (probability) , dipole , quantum electrodynamics , atomic physics , optics , quantum mechanics , laser , statistics , mathematics

In this paper, we study the effects of Rabi frequencies and multi-path radiation on the electromagnetically induced transparency (EIT) and the inversionless gain in a ladder- four-level system driven by two-coherent fields- The Rabi frequencies of the field-driven transition from the upper level to middle levels play an important role for the realization of the ultra-narrow EIT and inversionless gain- Different excitation mechanism can change the position of the EIT- The action of the spontaneous alignment of the dipole moment is investigated- The explanation for the numerical results is presented using the theory of dressed state

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