Preface. Theme 1: Background and Introduction. Introduction to Terahertz Solid-State Devices; J.M. Chamberlain, et al. Microwave Mixers; N.J. Cronin. Fundamentals of Receivers for Terahertz Systems; G. Beaudin, P.J. Encrenaz. Millimetre Wave and Terahertz Waveguides and Measurements; R.D. Pollard. Theme 2: Device Update. Unipolar and Bipolar Resonant Tunneling Components; C. van Hoof, et al. Superconducting Mixers for Submillimetre Wavelengths; E.L. Kollberg. Schottky Barrier Devices for THz Applications; H.P. Roeser, H.-W. Hubers. Device Physics of Intersubband Lasers; P. Harrison. From Quantum Mechanics to S-Parameters; W.S. Truscott. Travelling Wave Detectors - A Principle for Terahertz Operation; M.H. Kwakernaak, et al. Integrated Active Devices; D. Lippens. Hot Hole Lasers; W.T.H. Wenckebach. Theme 3: Integration. Integrated Waveguides and Mixers: An Overview of Waveguide Mixer Design and Construction; C.M. Mann. Integrated Waveguides and Mixers: Future Technologies for Device Integration; C.M. Mann. Material Issues for New Devices; D. Lippens. Active Antenna Power Combining, Beam Control and 2-Dimensional Combining; S.T. Chew, T. Itoh. Grid Amplifiers; D.B. Rutledge. System Characterisation Issues for Integration; J.W. Bowen. Theme 4: Applications. THz Astronomy Space; Th. de Graauw. Submillimetre Measurements from Satellites; B. Carli. Spacecraft Applications of THz Technology; W.J. Hall. Millimetre Measurements; D.K. Rytting. What Future for Wireless Telecommunication Systems Beyond 60 GHz; D. Wake. Technical Issues of Terahertz Component Fabrication; R.J. Wylde. Vector Measurements from 8 Ghz to the THz Range,Obtained in a Real Life Experiment; P. Goy, M. Gross. Theme 5: Lightwave/Terahertz Interaction. Lightwave/Terahertz Interaction; H.R. Fetterman. Electrooptic and Photoconductive Techniques for Probing and Imaging of THz Electric Signals; H.G. Roskos, et al. Tunable Coherent THz Radiation Pulses from Optically Excited Bloch Oscillations; H.G. Roskos, et al. Multigigahertz Optoelectronic Devices: Part 1 &endash; Resonant Tunneling Diode (RTD) for Optical Modulation; C.N. Ironside, S.G. McMeekin. Multigigahertz Optoelectronic Devices: Part 2 &endash; Monolithic, Harmonic, Modelocking of Semiconductor Lasers; C.N. Ironside, et al. Index.