Fig. 1. Proposed opto- and electro-mechanical hybrid system composed of a tunable cavity with a charged mirror operating as a CMO and a mechanically variable capacitor. A Λ-type three-level medium confined inside the cavity interacts with two optical fields: a constant optical field ϵc, which is resonantly injected into the cavity along the x axis to form the cavity field, and the probe field Ep, which is externally injected into the cavity along the z axis at frequency ωp.

Fig. 2. Imaginary part of the susceptibility of the probe field in the medium as a function of the square of the voltage U2 and the detuning Δp. The inset shows the real part of the susceptibility. Here, the units of the voltage and the detuning axis are the square of the voltage (V2) and hertz (Hz), respectively. The parameters are used from the experiments in Ref. [32] as ϵc=4×1010  Hz, γ=2π×5.75  MHz, γs=0.0001γ, g=0.001γ, κ=0.2γ, ωm=γ, m=145  ng, G0=2π×1.5×1016  Hz/m, S=0.6  mm2, r=0.21  μm, δ=0, and atomic density ∼1019  m−3. The modulative material is Rb87 with Λ-type three-level configuration.

Fig. 3. Numerical results of the EOM. (a) Modulation of the sine wave: (a1) shows the target absorptive waveform and numerical results, and (a2) shows the square of voltage waveform U2 applied to the capacitor. (b) Modulation of the sawtooth wave: (b1) shows the target absorptive waveform and numerical results, and (b2) shows the square of voltage waveform U2 applied to the capacitor. (c) Modulation of the square wave: (c1) shows the target absorptive waveform and numerical results, and (b2) shows the square of voltage waveform U2 applied to the capacitor. The simulation parameters are ϵc=0.5×1010  Hz, γm=3γ, and κ=0.4γ; the other parameters are the same as in Fig. 2.