Tunable external cavity diode lasers Annotation Presents a thorough account of the state of the art of tunable external cavity diode lasers Provides an up to date survey on physics technology and performance of widely applicable coherent radiation sources of tunable external cavity diode lasers May be used as a textbook for related undergraduate and graduate courses This is the first book on tunable external cavity semiconductor diode lasers providing an up to date survey on the physics technology and performance of widely applicable coherent radiation sources of tunable external cavity diode lasers. The purpose is to provide a thorough account of the state of the art of tunable external cavity diode lasers which is achieved by combining this account with basic concepts of semiconductor diode lasers and its tunability with monolithic structures