RESEARCH ON MILLIMETER-WAVE GENERATION TECHNIQUES.
Final rept. for 1 Apr 63-1 Apr 64,
MICROWAVE ASSOCIATES INC BURLINGTON MASS
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The objective of this work was to determine the materials and techniques necessary to provide direct coherent millimeter-wave energy generation by solid state means other than harmonic generation or masers. Two programs were initiated Task I, millimeter-wave generation using the electro-optical approach Task II, the obtaining of microwave oscillations in bulk gallium arsenide material by d-c pulses. In the electro-optical approach to the generation of millimeter-wave energy Task I using semiconductors, a light source and a detector is required. In this program a detector is developed. A PIN heterojunction structure was designed for optimum quantum efficiency, maximum operating frequency and a spectral response consistent with potential light sources. In a separate approach to the generation of millimeter-wave energy Task II microwave oscillations have been observed in bulk GaAs during the application of short video pulses. The oscillations were observed on a travelling-wave oscilloscope and frequencies were found to be in the UHF and L-band range.