The potential of the "blue laser" for commercial lighting systems that use about one-tenth of the power and with a thousand times the operating lifetime of a comparable conventional system are now being realized. Introduction to Nitride Semiconductor Blue Lasers and Light Emitting Diodes is a comprehensive work that introduces the subject at a level suitable for graduate students. It covers the physics of light emitting diodes and laser diodes based on gallium nitride and related semiconductors. Beginning with the fundamentals, it gives an outline of their structural, transport, and optical properties, covers both theory and experiment, and examines actual and potential device applications.