Optimal filters for high-speed compressive detection in spectroscopy

Gregery T. Buzzard; Bradley J. Lucier

doi:10.1117/12.2012700

14 February 2013 Optimal filters for high-speed compressive detection in spectroscopy

Gregery T. Buzzard, Bradley J. Lucier

Proceedings Volume 8657, Computational Imaging XI; 865707 (2013) https://doi.org/10.1117/12.2012700
Event: IS&T/SPIE Electronic Imaging, 2013, Burlingame, California, United States

Abstract

Recent advances allow for the construction of filters with precisely defined frequency response for use in Raman chemical spectroscopy. In this paper we give a probabilistic interpretation of the output of such filters and use this to give an algorithm to design optimal filters to minimize the mean squared error in the estimated photon emission rates for multiple spectra. Experiments using these filters demonstrate that detecting as few as ~10 Raman scattered photons in as little time as ~30μs can be sufficient to positively distinguish chemical species. This speed should allow "chemical imaging" of samples.

Citation Download Citation

Gregery T. Buzzard and Bradley J. Lucier "Optimal filters for high-speed compressive detection in spectroscopy", Proc. SPIE 8657, Computational Imaging XI, 865707 (14 February 2013); https://doi.org/10.1117/12.2012700

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