Optical physics is a study of atomics and molecules. It is the
study of electromagnetic radiation, the interaction and the properties of that
radiation, with matter, especially its manipulation and control. It differs
from general optics and
optical engineering, however among optical physics, applied optics, and
optical engineering, the applications of applied optics and the devices of
optical engineering are necessary for basic research in optical physics, and
that research takes to the development of new devices and applications. Major
study in optical physics is also keen to quantum optics and coherence. In
optical physics, research is also stimulated in areas such as ultra-short
electromagnetic
fields, the nonlinear response of isolated atoms to intense,
quantum
properties of the electromagnetic field, and the atom-cavity
interaction at high fields