A large cross-section Mach-Zehnder interferometer is illuminated by a 30-nsec CO2 laser pulse. The line-integrated density sensitivity is 2 × 1019 m-2. Spatial features down to 150 µm can be identified within a usable field of view of 50 mm. An example of a typical interference pattern obtained on a plasma column is shown together with its corresponding Abel deconvoluted density profile.
© 1982 Optical Society of America
J. L. Lachambre, R. Decoste, and A. Robert, "Large cross-section pulsed TEA-CO2 interferometer for plasma diagnostics," Appl. Opt. 21, 2538-2540 (1982)