Title :
An interferometric study of CO2-1aser-produced sparks
Author :
Richardson, Martin C. ; Alcock, A.J.
Author_Institution :
National Research Council of Canada, Ottawa, Ontario, Canada
fDate :
12/1/1973 12:00:00 AM
Abstract :
The expansion of sparks produced in various gas mixtures by a helical TEA CO2laser of modest power (∼ 0.5 MW) has been examined using time-resolved photography and two-wavelength interferometry. The latter was accomplished with the aid of a synchronized ruby laser, the fundamental and second-harmonic frequencies of which illuminated a Mach-Zehnder interferometer. The interferograms have been analyzed using Abel inversion techniques and two-dimensional profiles of the electron density within the sparks obtained.
Keywords :
Electric breakdown; Free electron lasers; Gas lasers; Gases; Laser mode locking; Optical interferometry; Optical resonators; Plasma sources; Plasma waves; Sparks;
Journal_Title :
Quantum Electronics, IEEE Journal of
DOI :
10.1109/JQE.1973.1077433
