Fig. 3.

Representative Raman spectra acquired with the slit-based [(a) and (b)] and coded aperture [(c) and (d)] instruments. The measured data were acquired with a 0% [(a) and (c)] or 1% [(b) and (d)] Intralipid overlayer and are well fit by the pure spectral components as evidenced by the small amplitudes of the fit residuals. The signal-to-noise ratio (SNR) and signal-to-background ratio (SBR) of each representative measurement are also provided.