P. David Southgate joined RCA Labs, Princeton in 1966 where his interests have included optical and electronic effects in semiconductors and organic materials, and pyroelectric effects and their use in thermal detectors. Currently, he is working on various aspects of instrumentation and inspection algorithms for manufacturing technology. Prior to his association with RCA he worked on high-speed camera and oscilloscope development and on solid state acoustics.
- RCA 1980 Company Biography

Peter David Southgate earned a B.Sc. degree in Physics and Mathematics in 1948, an M.Sc. degree in Mathematics in 1952, and a Ph.D. degree in Physics in 1958, all from London University (Imperial College). From 1948 to 1959 at Mullard Research Laboratories England, he worked on the development of instruments, such as high-speed oscilloscopes and image-converter cameras. He also studied ultrasonic effects on metal solidification and did research on acoustic losses in semiconductors. From 1959 to 1966, at IIT Research Institute, Chicago, IL, Dr. Southgate did research on acoustic and ultrasonic losses in insulators and semiconductors. He studied mechanisms and developed theories for charge-carrier motion, impurity diffusion, dislocation motion, and mechanical properties. During 1962-66 he headed a group working in these areas.

Dr. Southgate then joined RCA Laboratories, Princeton, NJ, as a Member, Technical Staff. His early work there included the development of an internal-ionization GaAs laser, the measurement of hot-carrier distribution functions by emitted spectra, studies of nonlinear optical coefficients (harmonic generation) in organic crystals, the development of a theory of skin-effect acoustic generation in metals, studies of mechanisms of poling in pyroelectric polymers, and the development of pyroelectric vidicon and associated equipment. Later he developed a novel method of ink-jet printing and a new type of TV-tube gun cathode. He designed and constructed prototype inspection equipment involving optical sensors and image processing, including monitors for TV-tube shadowmask apertures, for phosphor-screen line width, and for perceived mask nonuniformity. More recently he developed special equipment for detecting various types of defect in the VideoDisc, as well as algorithms to model VideoDisc stylus dynamics and stylus-disc interactions. Dr. Southgate holds nine U.S. patents, has several patents pending, and has published 34 articles in scientific journals. He is a member of the American Physical Society and has sewed on the Editorial Board of the Review of Scientific Instruments.
- RCA 1984 Company Biography

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