双光力诱导透明窗口的可调特性

提出一个杂化腔光力系统理论方案,利用两纳米机械振子间的库仑耦合作用实现弱探测光的双光力诱导透明窗口.研究边带可分辨区域和红失谐情况下双光力诱导透明窗口的可调特性.数值计算表明:两纳米振子间的库仑作用可有效地使单光力诱导透明窗口劈裂为双透明窗口.随着库仑耦合强度的增大,两透明窗口间的距离对称性地拉大;其次,光力腔衰减率的改变对两透明窗口的位置和深度无影响,仅对两透明窗口的宽度产生细微改变,测量精度可在坏腔情形下得到很好的保持;另外,仅增加参量放大器的非线性增益参量将使两透明窗口变宽,而引入驱动参量放大器的光场相位,利用相位匹配可以产生比空腔情形更加狭窄陡峭的双透明窗口,可用于比空腔情况更加精密的测量.

Tunable Characteristics of Double Optomechanically Induced Transparency

A hybrid optomechanical system consisting of an optical parametric amplifier and Coulomb force was proposed to observe the double optomechanically induced transparency (OMIT) by introducing the Coulomb coupling between the two nanomechanical resonators.The tunable characteristics of OMIT were studied under the resolved sideband regime and red detuning.The tunable double-OMIT can be observed from the output field at the probe frequency by controlling the intensity of the Coulomb coupling.The distance between the two transparency windows is increased symmetrically by enhancing the intensity of the Coulomb coupling.Changing the delays of two nanomechanical resonators can only bring about a slight influence on the depth of the double windows.The double-OMIT windows will broaden out only by enhancing nonlinear gain of the Optical Parametric Amplifier (OPA).A narrower transparency windows than the case of empty cavity can be realized by phase matching when the phase of the field driving the OPA was considered.These results might be applied to light storage and precision measurement.