the properties of emission spectra of two double-level atoms coupled with two single-mode cavity system with off-resonant dissipation were studied. We investigated the effects of the detuning between the atom and the cavity field
the cavity decay rate and the atom dephasing on emission spectra of the system. The results show that the cavity field spectrum of the system presents three peak structure and the atomic emission spectrum presents double peak structure. In the case of detuning
both the cavity field spectrum and the atomic emission spectrum are asymmetric. When the atom and cavity field are off-resonant compared with the resonance condition
the peak position has obvious drift and the middle peak has obvious increase. Increasing the detuning between cavity field and atom will cause the edge peak to drift to low frequency and change its spectral intensity. Increasing the detuning between atoms and cavity field can make the spectrum drift to low frequency and change the spectral intensity of all peaks. As the decay rate of cavity field increases
the intensity of edge peak will decrease under the condition of resonance. In the case of detuning
the strength of all peaks will reduce. As the atom dephasing increases
the intensity of all peaks of the spectrum will reduce in the case of resonance or off-resonant.
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references
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