Simple fast-scanning Fabry-Perot spectrometer.

A simple time-resolved Fabry-Perot spectrometer has been designed for the measurement of line profiles emitted by a pulsed plasma. The rotating mirror is used to scan the spatial image of the fringes. The intensity distribution of interference patterns can be observed within a scanning time of 25 nsec. The velocity of an accelerated copper plasma was measured by means of this system.