STATIC FOURIER-TRANSFORM ULTRAVIOLET SPECTROMETER FOR GAS-DETECTION

We report the design, construction, and evaluation of a static Fourier -transform ultraviolet spectrometer. The spectrometer is based on Woll aston prisms that form an interferogram in the spatial domain, which i s recorded with a detector array. We demonstrate the application of th e spectrometer to gas detection. Using a deuterium light source, we me asured a detection limit, with a 1-s integration time, for hydrogen su lfide and sulfur dioxide, corresponding to 0.2 ppm over a 5-m path len gth. (C) 1997 Optical Society of America.