STUDY OF PLASMA AMPLIFIERS.
MICROWAVE ASSOCIATES INC BURLINGTON MASS
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An investigation on the amplification of electromagnetic signals interacting with a plasma was carried out. Specifically, use of recombination radiation at optical frequencies is considered. Theoretical considerations for optical frequencies indicate that a low temperature plasma with high density, high degree of ionization is necessary. Thermal-contact ionization of cesium is chosen as the most suitable means. Fabrication of this plasma generator and the attendant technological problems are discussed in detail. Experimental results show that recombination radiation has been obtained in this type of plasma. However because of the low plasma density attainable, optical oscillation could not be initiated. Schemes are suggested to increase the density and degree of ionization. Studies on gas lasers were also carried out. Optical resonator modes in a Br2-Ar laser are examined in detail. Excellent agreement between experimental and theoretical results is obtained. Author