This book provides an introduction to the body of theory shared by several branches of modern optics--nonlinear optics, quantum electronics, laser physics, and quantum optics--with an emphasis on quantum and statistical aspects. It is intended for well prepared undergraduate and graduate students in physics, applied physics, electrical engineering, and chemistry who seek a level of preparation of sufficient maturity to enable them to follow the specialized literature.Stochastic Processes. Density Matrices and Perturbation Theory. Magnetic Two-Level System. The Radiation Field. Absorption, Emission, and Scattering in Weak Fields. Reservoir Theory and Damping. Nonlinear and Multiphoton Processes. Index. This is a well-written introduction to photon-atom interactions. --LA PHYSIQUE AU CANADA