詳細

The region of the electromagnetic spectrum between microwaves and infrared radiation has come to be known as the "THz gap," mainly due to the lack of readily available laboratory sources and detectors. Potential applications, however, particularly in medicine, security, and communications, have led to increased activity by the mainstream physics and engineering community in recent years. The primary objective of this Field Guide to Terahertz Sources, Detectors, and Optics is to provide the reader with a concise description of the quasi-optical techniques used to design THz systems, as well as the basic principles of operation of the most common THz components in use today.

Sample Pages(PDF)

Preface
Glossary of Symbols and Acronyms
Introduction
　The THz Band
　The THz Gap
　THz Absorption in Air
　Reflection and Transmission
THz Sources
　Natural Sources of THz Radiation
　THz Generation Techniques
　Gunn Diodes
　IMPATT Diodes
　TUNNETT Diodes
　Resonant Tunnel Diodes
　Difference Frequency Generation
　Electro-optic Crystals (Optical Rectification)
　Optical Parametric Oscillators
　Frequency Multipliers
　Photoconductive Antennas
　Photomixing
　Optically Pumped Far-IR Gas Lasers
　p-Type Germanium Lasers
　Quantum Cascade Lasers
　Gyrotrons
　Synchrotrons
　Free-Electron Lasers
　Backward Wave Oscillators
　Smith?Purcell Emitters
THz Detectors
　THz Detection Techniques
　Responsivity and Signal-to-Noise Ratio
　Noise Equivalent Power
　Shot and Thermal Noise
　Extrinsic Semiconductor Detectors
　Photoconductive Detectors
　Photomixers
　SIS Mixers
　Schottky Diode Mixers
　Electro-optic Sampling
　Semiconductor Bolometers
　Microbolometer Arrays
　Transition-Edge Sensors
　SQUIDs
　Hot-Electron Bolometers
　Hot-Electron Bolometer Mixers
　Pyroelectric Detectors
　Golay Cells
THz Optics
　Gaussian Beam Propagation
　Complex Radius of Curvature
　Gaussian Beam Parameters
　Beamwidth
　Edge Taper
　Truncation and Spillover (Gaussian Beams)
　Truncation and Spillover (Non-Gaussian Beams)
　Confocal Distance
　Far-Field Divergence
　Ray Matrices and Gaussian Beam Transformation
　Higher-Order Modes (Cylindrical Coordinates)
　Higher-Order Modes (Rectangular Coordinates)
　Mode Coefficients
　Power Coupling Efficiency
　Gaussicity
　Mismatched Beams and Tolerancing
　Scattering Matrix Formulism
　Transmission Matrices
　Linear Scattering Operators
　Truncation at an Aperture
　Perfect Lenses and Pure Propagation
　Reflections at Dielectric Interfaces (Lens Surfaces)
　Standing Waves in Horn-Fed Systems
　Cascading Scattering and Transmission Matrices
　Off-Axis Mirrors (Ellipsoidal)
　Off-Axis Mirrors (Parabolic)
　Off-Axis Mirrors (Distortion and Cross-Polarization)
　Polarizing Grids
　Roof Mirrors as Polarization Rotators
　Dual-Beam Interferometers (Tunable Filters)
　Diffraction Losses in Interferometers
　Diplexers and Multiplexers
　Four-Port Dual-Beam Interferometer (Diplexer)
　Horn Antenna Feeds
　Corrugated Conical Horns (Scalar Feed)
　Smooth-Walled Horns (Pyramidal and Diagonal)
　Conical Smooth-Walled Horns (Single and Dual Mode)
　Shaped Horns and Multimode Feeds
　Lens Antennas
　System Design
　Modeling Techniques
THz Applications
　THz Imaging
　THz Spectroscopy
　THz Time-Domain Spectroscopy
Equation Summary
Bibliography
Index