Abstract
A Hadamard transform spectrometer has been designed which uses a stationary Hadamard mask at the entrance plane of a holographic grating, photodiode array spectrometer. The mask contains 2N-1 slots where N is the number of resolution elements in the photodiode array. The instrument uses no moving parts and has the ability to capture the spectrum of a randomly occurring pulse source with significantly higher signal-to-noise ratio than a single-slit array spectrometer. It utilizes all-reflective optics and is a generic design suitable for use in the ultraviolet, visible and infrared when equipped with a detector array which is sensitive in the region of interest.
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