Fig. 4: Optomechanical induced transparency from dissipative and dispersive coupling.
From: Dissipative optomechanics in high-frequency nanomechanical resonators

a Level diagram of OMIT. The probe beam induces phonon-conserving transitions while the mechanically scattered photons necessarily decrease the phonon population. The two optomechanical coupling mechanisms (dissipative and dispersive) interfere to generate the transparency window. b Scattering parameter magnitude, ∣S21∣, as a function of the phase-modulation frequency, Ωmod. Data is shown for the differential optical mode. Inset: Transparency window as highlighted in blue. c Transparency windows for the differential (top) and common (bottom) optical modes as a function of input power. d Absorption windows for the differential (top) and common (bottom) optical modes. Input powers are indicated through the matching colors with (c).