The studies of ultrashort laser pulse interactions with single atoms, molecules, nanoparticles and condensed matter is a hot topic of modern physics, since the obtained results stimulate the development of fundamental principles of light-matter interaction and, at the same time, find the wide area of practical applications. This volume contains the contributions devoted both to the discussion of general principles and fundamental experiments, as well as the different practical applications. The content of the volume has been divided into the two sections, however, this division is rather formal because the most of papers concern with the general problems and simultaneously provide the elegant proposals of practical applications