Schematic illustration of the Second-Harmonic, Dispersion-Interferometer (SHDI) that provides for the precise measurement of density in a plasma, gas, and other dispersive media. The SHDI instrument is inherently stable, low cost, and easy to maintain. SHDIs are installed on experiments at several prominent plasma physics laboratories. The SHDI is now available in 1-Dimensional and 2-Dimensional configurations. The 1D SHDI provides a line of sight measurement and the 2D SHDI provides time-resolved transverse imaging for diameters up to 1 cm. Download the brochure below, or contact us for further information and a quote.