This book provides a thorough and comprehensive introduction to the physics of molecules and clusters in intense laser fields. It covers both theoretical and experimental aspects of the subject, and presents new research in the area of clusters in intense laser fields. Topics covered include coherent control, diatomic and polyatomic molecules, and femtosecond pulse production and diagnostics. Written by leading researchers in the field, this book will be of interest to graduate students and researchers in atomic, molecular and optical physics. It will also be suitable as a reference text for advanced physics courses.