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THEORY OF THE LASER INTERFEROMETER AND ITS USE IN PLASMA DIAGNOSTICS.
ILLINOIS UNIV URBANA ENGINEERING EXPERIMENT STATION
The theory of the laser interferometer and its application in investigations of relatively dense to very dense gaseous plasmas is discussed. It is shown that the sensitivity of the interferometer can be greatly improved by utilizing a spherical geometry reference cavity rather than one formed by planar mirrors. The parameters that determine the sensitivity of a spherical geometry laser interferometer are discussed and detailed theory of such is given. Particular emphasis is placed on determining the maximum frequency response of the interferometer. The parameters that limit the frequency response are discussed and it is shown that by proper selection of these parameter and proper detection techniques, it is possible to detect resonances at rates in excess of 50 per microsecond. Author
Scientific rept. no. 1,
DA ARO D31 124G582