Z-pinch 2D interferometry setup
Such valve-nozzle systems are therefore measured with the use of a 2D Mach-Zehnder interferometer (Fig. 1). A 532 nm 100 mW CW laser beam is expanded so that the probe beam passing underneath the valve covers the entire nozzle. When the probe and reference beams are combined using a cube beam splitter, two interference patterns are obtained. One pattern is projected on a photodiode, used to monitor the gas flow and determine the rise time to a steady-state flow. The second pattern passes through an imaging lens and is picked up by an ICCD camera.
Fig. 1: The 2D Mach-Zehnder interferometer experimental setup.
Modified on: 2010-05-23