  Laser engineered exciton-polariton networks could lead to dynamically
configurable integrated optical circuitry and quantum devices. Combining cavity
optomechanics with electrodynamics in laser configurable hybrid designs
constitutes a platform for the vibrational control, conversion, and transport
of signals. With this aim we investigate 3D optical traps laser-induced in
quantum-well embedded semiconductor planar microcavities. We show that the
laser generated and controlled discrete states of the traps dramatically modify
the interaction between photons and phonons confined in the resonators,
accessing through coupling of photoelastic origin $g_\mathrm{0}/2\pi\sim 1.7$
MHz an optomechanical cooperativity $C>1$ for mW excitation. The quenching of
Stokes processes and double-resonant enhancement of anti-Stokes ones involving
pairs of discrete optical states in the side-band resolved regime, allows the
optomechanical cooling of 180 GHz bulk acoustic waves, starting from room
temperature down to $\sim120$ K. These results pave the way for dynamical
tailoring of optomechanical actuation in the extremely-high-frequency range
(30-300 GHz) for future network and quantum technologies.
