The monochromatic and single phase electromagnetic fields generate ordered motions in the electrons and ions in the solid and liquid materials. The coherent motion stored kinetic energy. If the kinetic energy is large enough to destroy the crystal structures, the phase deformations happens at much under temperatures expected in the thermally equilibrium state. If it could couple to the optical light generated by thermal motions of the material, it would excite stimulated Brillouin emissions. The stimulated emission supply the energy under the thermally non-equilibrium state.