The papers in this comprehensive volume survey many recent innovations in ultrashort pulse generation, and review the state of the art in compact, modelocked laser systems, discussing both their operational principles and potential applications. The book first covers the theory of short optical pulse generation by modelocking. Then, contributors discuss modelocking techniques in different types of lasers: solid state; diode-pumped; fiber; surface emitting semiconductor lasers; external cavity semiconductor lasers; hybrid soliton pulse sources; and monolithic colliding pulse modelocked diode lasers. Presenting both theoretical and experimental aspects throughout, this book will be invaluable to anyone interested in short pulse laser systems, and particularly to researchers involved in high speed communications or the investigation of ultrafast phenomena.