Institute of Electrical and Electronics Engineers, IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 1(58), p. 259-262, 2011
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In this paper, we present a configurable multispectral imaging system based on an acousto-optic tunable filter (AOTF). Typically, AOTFs are used to filter a single wavelength at a time, but thanks to the use of a versatile sweeping frequency generator implemented with a direct digital synthesizer, the imager may capture a configurable spectral range. Experimental results show a good spectral and imaging response of the system for spectral bandwidth up to a 50 nm.