Report developed under topic No. A09A-T009, contract W911NF-09-C-0153. Applied Quantum Technologies along with its university partner Duke University conducted, during a Phase I STTR contract, the design of a coded-aperture snapshot Raman imager. The snapshot system design provides dwell times much shorter than conventional slit-based or tunable-filter based spectral imagers. A deep ultra-violet or short-wave infrared excitation source allows for minimal sample fluorescence, making the system able to cope with target signatures in a wide variety of backgrounds. While the majority of Raman systems available are point-based, having imaging capabilities permits wide area coverage at a fraction of the time of point-based systems. By utilizing compressed sensing algorithms, large amounts of spatial and spectral information can be acquired using the limited pixel counts available in detector arrays.
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