Ultrafast Phenomena XV : Proceedings of the 15th International Conference Pacific Grove USA July 30 August 4 2006 Ultrafast Phenomena XV presents the latest advances in ultrafast science including both ultrafast optical technology and the study of ultrafast phenomena. It covers picosecond femtosecond and attosecond processes relevant to applications in physics chemistry biology and engineering. 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 15th International Conference on Ultrafast Phenomena and provides an up to date view of this important and rapidly advancing field. This book summarizes the results presented at the 15th International Conference on Ultrafast Phenomena and provides an up to date view of this important field. It presents the latest advances in ultrafast science including both ultrafast optical technology and the study of ultrafast phenomena. It covers picosecond femtosecond and attosecond processes relevant to applications in physics chemistry biology and engineering.