Attosecond Physics : Attosecond Measurements and Control of Physical Systems Attophysics is an emerging field in physics devoted to the study and characterization of matter dynamics in the sub femtosecond time scale. This book gives coverage of a broad set of selected topics in this field exciting by their novelty and their potential impact. The book is written review like. It also includes fundamental chapters as introduction to the field for non specialist physicists. The book is structured in four sections: basics attosecond pulse technology applications to measurements and control of physical processes and future perspectives. It is a valuable reference tool for researchers in the field as well as a concise introduction to non specialist readers