  We review the field of cavity optomechanics, which explores the interaction
between electromagnetic radiation and nano- or micromechanical motion. This
review covers the basics of optical cavities and mechanical resonators, their
mutual optomechanical interaction mediated by the radiation pressure force, the
large variety of experimental systems which exhibit this interaction, optical
measurements of mechanical motion, dynamical backaction amplification and
cooling, nonlinear dynamics, multimode optomechanics, and proposals for future
cavity quantum optomechanics experiments. In addition, we describe the
perspectives for fundamental quantum physics and for possible applications of
optomechanical devices.
