Infrared and Millimeter Waves, Volume 11: Millimeter Components and Techniques, Part III compiles the work of several authors while focusing on certain aspects of infrared and millimeter waves, such as sources of radiation, instrumentation, and millimeter systems. This volume covers millimeter components and techniques. The first chapter is a review of indium phosphide and gallium arsenide transferred-electron devices, while the next chapter covers nonradiative dielectric waveguide. Chapter 3 discusses groove guide for short millimetric waveguide systems. This book then tackles the application of oversized cavities for millimeter-wave spectroscopy, and Chapter 5 discusses powerful gyrotrons. Chapter 6 covers some perspectives on operating frequency increase in gyrotrons; Chapter 7 covers phase noise and AM noise measurement in the frequency domain. The last chapter discusses the basic design considerations for free-electron lasers driven by electron beams from rf. This book will be of great use to researchers or professionals whose work involves infrared and millimeter waves.