This comprehensive volume provides a survey of the many innovations in the field of ultrashort pulse generation, and reviews the state of the art in compact, modelocked laser systems, discussing both their operational principles and potential applications. The theory of short optical pulse generation by modelocking is covered in the first chapter. Thereafter, modelocking techniques in different types of lasers are discussed: solid state lasers; diode-pumped lasers; fiber lasers; 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.