  We propose a scheme that can generate tunable optomechanically induced
transparency in a hybrid piezooptomechanical cavity system. The system is
composed of a high-quality planar distributed Bragg reflector cavity modified
with an embedded Gaussian-shaped defect. Moreover, interdigitated transducers
are fabricated on the surface of the cavity to generate surface acoustic waves.
Under the actuation of the surface acoustic wave, the upper Bragg mirrors can
be vibrated as a bulk acoustic resonator, and the distributed Bragg reflector
cavity becomes a standard three-level optomechanical system. In this situation,
we show that when a strong pump optical field and a weak probe optical field
are simultaneously applied to the hybrid optomechanical cavity system,
optomechanically induced transparency occurs under the quantum interference
between different energy-level pathways. Our scheme can be applied in the
fields of optical switches and quantum information processing in solid-state
quantum systems.
