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

作　　者：Jimmi HervéTalla Mbé Ulrich Chancelin Tiofack Demanou Christian Kenfack-Sadem Martin Tchoffo 

机构地区：[1]Research Unit of Condensed Matter,Electronics and Signal Processing,Department of Physics,University of Dschang,P.O.Box 67,Dschang,Cameroon [2]African Institute for Mathematical Sciences,P.O.Box 608,Limbe,Cameroon

出　　处：《Chinese Physics B》2023年第12期325-331,共7页中国物理B（英文版）

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.

关 键 词：slow and fast light optomechanical systems group delay quadratic coupling 

分 类 号：O43[机械工程—光学工程]