The contents of this book are composed of products of research conducted for more than 20years with many collaborators in The Department of Physics of the University of Tokyo, The University of Electro-Communications, National Chiao-Tung University, Tokyo University of Science. They contain almost every research in the field of ultrashort pulse lasers and ultrafast spectroscopy in various systems such solid-state materials, solution, liquids, organic and inorganic materials and biologically important systems. I hope this book is useful for those young people who are interested in getting involved in this field.
The spectral ranges are ultraviolet, visible, nearinfrared and mind infrared including the generation of pulses, pulse characterization and methods of spectroscopic measurements and scientific meanings of the studied ultrafast time spectroscopies.