Heterodyne detection of pulsed CO/sub 2/ laser light scattered from ion acoustic waves in a plasma

Journal Article · Tue Mar 01 04:00:00 EST 1977 · IEEE Trans. Plasma Sci.; (United States)

DOI:https://doi.org/10.1109/TPS.1977.4317000· OSTI ID:7112115

Baker, D R; Heckenberg, N R; Meyer, J

The small angle scattering of light from a pulsed CO/sub 2/ laser has been used to measure ion acoustic waves excited in a low density plasma. The laser is a hybrid laser consisting of a high pressure TEA discharge and a low pressure continuous discharge. The scattered light is detected by heterodyning, using laser light as the local oscillator. Two methods of providing the laser light local oscillator have been used. The dependence of the scattered light on the ion acoustic wavelength has been measured. The amplitude of the scattered light compared with the amplitude of the waves in the plasma indicates that the heterodyne mixing efficiency is better than 10 percent.

• Research Organization: Max-Planck-Institut fuer Plasmaphysik, Munich
• OSTI ID: 7112115
• Journal Information: IEEE Trans. Plasma Sci.; (United States), Journal Name: IEEE Trans. Plasma Sci.; (United States) Vol. PS-5:1; ISSN ITPSB
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700102* -- Fusion Energy-- Plasma Research-- Diagnostics
AMPLITUDES
CARBON DIOXIDE LASERS
ELECTROMAGNETIC RADIATION
GAS LASERS
ION ACOUSTIC WAVES
ION WAVES
LASER RADIATION
LASERS
MEASURING METHODS
PLASMA
PLASMA DIAGNOSTICS
PLASMA WAVES
RADIATIONS
SCATTERING