Enhancement of the group delay in quadratic coupling optomechanical systems subjected to an external force

被引:0
|
作者
Mbe, Jimmi Herve Talla [1 ]
Demanou, Ulrich Chancelin Tiofack [1 ,2 ]
Kenfack-Sadem, Christian [1 ]
Tchoffo, Martin [1 ]
机构
[1] Univ Dschang, Dept Phys, Res Unit Condensed Matter Elect & Signal Proc, POB 67, Dschang, Cameroon
[2] African Inst Math Sci, POB 608, Limbe, Cameroon
关键词
slow and fast light; optomechanical systems; group delay; quadratic coupling; 42.50.-p; 42.25.Bs; 42.79.-e; 03.65.Yz; SLOW LIGHT;
D O I
10.1088/1674-1056/accc80
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We theoretically study the effect of the quadratic coupling strength on optomechanical systems subjected to a continuous external force. Quadratic coupling strength originates from strong coupling between the optical and the mechanical degrees of freedom. We show that the quadratic coupling strength reduces the amplitude of the dispersion spectra at the resonance in both blue- and red-sideband regimes. However, it increases (decreases) the amplitude of the absorption spectrum in the blue- (red-)sideband regime. Furthermore, in both sideband regimes, the effective detuning between the pump and the cavity deviates with the quadratic coupling strength. Thereby, appropriate selection of the quadratic coupling strength results in an important magnification (in absolute value) of the group delay for both slow and fast light exiting from the optomechanical cavity.
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页数:7
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