This book presents the latest advances in ultrafast science, including both ultrafast optics technology and the study of ultrafast phenomena. It covers picosecond, femtosecond, and attosecond processes relevant to physics, chemistry, biology, and engineering applications. Ultrafast technology has a profound impact in a wide range of applications, among them biomedical imaging, chemical dynamics, frequency standards, materials processing, and ultrahigh-speed communications. This book summarizes the results presented at the 13th International Conference on Ultrafast Phenomena and provides an up-to-date view of this important and rapidly advancing field.