Infrared and Millimeter Waves

Infrared and Millimeter Waves, Volume 1: Sources of Radiation explores modern sources of radiation available for use in the far-infrared and near-millimeter wavelength range of the spectrum. This book describes the operating principles and comparative performances of all three types of device: electron tubes, solid state devices, and optically pumped lasers. This volume is comprised of seven chapters; the first of which reviews the developments in the design and construction of high-power, high-efficiency millimeter sources and in the nonlinear theory for cyclotron masers. The second chapter deals with IMPATT devices for millimeter-wave power generation, with emphasis on device physics design considerations as well as cw and pulsed operations of IMPATT oscillators and amplifiers at millimeter frequencies. The chapters that follow focus on optically pumped lasers, backward wave oscillators, the Ledatron, and infrared and submillimeter-wave waveguides. This book concludes with a discussion on free electron lasers based on stimulated scattering from relativistic electron beams. An original reformulation of stimulated scattering theory that attempts to encompass all previous treatments is described and compared with available experimental data. This text also presents a semi-qualitative analysis of nonlinear saturation. This book will appeal to scientists and professional engineers.

List of Contributors Preface Contents of Volume 2 Chapter 1 Gyrotrons I. Introduction II. The Linear Cyclotron Maser Gain Mechanism III. Nonlinear Considerations IV. Summary of Soviet Gyrotron Development V. Recent Device Results in the U.S.A. VI. Prospectus References Chapter 2 IMPATT Devices for Generation of Millimeter Waves I. Introduction II. Device Physics III. CW Oscillators IV. Pulsed Oscillators V. Power Amplifiers VI. AM and FM Noise Characteristics VII. Frequency and Phase Stabilization VIII. Conclusion References Chapter 3 Pulsed Optically Pumped Far Infrared Lasers I. Introduction II. Theoretical Considerations III. Specific Molecular Systems IV. Operational Configurations V. Additional Effects VI. Summary References Chapter 4 Backward Wave Oscillators I. Electron Tubes for Millimeter or Far-Infrared Wavelengths II. The Backward Wave Oscillator: Principle and Design III. Millimeter Wave and Far-Infrared BWO's IV. Conclusion References Chapter 5 The Ledatron I. Introduction II. Operational Principle III. Fabry-Perot Mode Operation IV. Surface-Wave Mode Operation V. Summary and Conclusion References Chapter 6 Infrared and Submillimeter-Wave Waveguides I. Introduction II. Leaky Modes in Hollow Waveguides III. Hollow Waveguides with Constant Cross Section IV. Periodic Waveguide Structures V. Waveguide-Laser Feedback VI. Infrared and Submillimeter-Wave Lasers with Hollow Waveguides VII. Future Aspects References Chapter 7 Free Electron Lasers and Stimulated Scattering from Relativistic Electron Beams I. Introduction II. Physical Model and Analysis III. Gain and Saturation Level in Various FEL Regimes IV. Discussion: A Visible Light Free Electron Laser V. Laboratory Experiments