Double optomechanical transparency with direct mechanical interaction*
Li Ling-Chao, Shi Rao, Xu Jun, Hu Xiang-Ming†
       
Dependence of the quadrature of the output field around ω = ω c+ ω m on the mechanical coupling strength for P c = 20 mW. The black-dotted, red-solid, black-dot-dashed curves correspond to χ = 400 J/m2, 1000 J/m2, 2000 J/m2, respectively.